Mary Berry Breakfast Frittata Recipe

The Mary Berry Breakfast Frittata is a hearty, oven-baked dish packed with tender vegetables, diced ham, and sharp cheddar cheese. The fluffy eggs set into a golden, slightly puffed top with a moist, custard-like interior — perfect for a satisfying breakfast or brunch.

This recipe takes 15 minutes of prep and 25 minutes of baking, totalling about 40 minutes. It is beginner-friendly, though the trickiest part is timing the stovetop set before transferring to the oven.

What is Mary Berry Breakfast Frittata?

It is a British-style frittata made by whisking eggs with milk, then folding in shredded cheddar, sautéed onion, bell pepper, mushrooms, and diced ham. The mixture goes straight from stove to oven, yielding a puffed, golden top and a creamy interior. It is ideal for a filling breakfast or a light lunch served with a side salad.

Why This Recipe is Worth Trying

• One-pan convenience — Cook the filling, pour the eggs, and bake in the same skillet, so cleanup is minimal.
• Customisable foundation — You can swap the ham and vegetables for whatever you have in the fridge without losing the structure.
• Make-ahead friendly — It stays well in the fridge for up to three days and can be reheated without drying out.
• Balanced macros — Each serving packs 26 g of protein and only 5 g of carbohydrates, making it a smart choice for a low-carb breakfast.

Essential Ingredients to Make Mary Berry Breakfast Frittata

Every ingredient here plays a specific role, from the frothy eggs to the sharp cheddar. Here is what you need and why.

The Eggs and Dairy

• 8 large eggs — They form the base. Whisk them until frothy to incorporate air, which gives a lighter texture.
• 1/4 cup whole milk — Adds moisture and keeps the eggs from becoming rubbery. You can use semi-skimmed, but whole milk gives a creamier result.
• 1 cup shredded sharp cheddar cheese (about 4 oz) — 3/4 cup goes into the egg mixture, and 1/4 cup is sprinkled on top for a golden crust. Sharp cheddar provides bold flavour without overwhelming.

The Vegetables and Ham

• 1 tablespoon olive oil — For sautéing the aromatics. Extra virgin olive oil works, or use butter for a richer taste.
• 1/2 cup yellow onion, finely diced — Cooked until softened and translucent, it adds sweetness without dominating the dish.
• 1/2 cup red bell pepper, seeded and diced into 1/4-inch pieces — Brings colour and a mild sweetness. You can substitute with green bell pepper for a slightly sharper bite.
• 1 cup white mushrooms, cleaned and sliced 1/4-inch thick — They release moisture as they cook, concentrating their earthy flavour. Do not overcrowd the pan so they brown properly.
• 4 ounces cooked ham, diced into 1/2-inch cubes (about 1 cup) — Adds protein and a salty, savoury note. Leftover roast ham or thick deli ham both work well.

Seasoning

• 1/2 teaspoon kosher salt — Essential for seasoning the eggs and drawing out the vegetables’ natural flavours.
• 1/4 teaspoon freshly ground black pepper — Adds a subtle warmth. Pre-ground pepper works, but fresh grinding gives a brighter taste.

Handy Kitchen Tools for Best Results

• A 10-inch oven-safe nonstick skillet or cast-iron pan — The nonstick surface ensures the frittata slides out easily, while cast iron holds heat evenly. Make sure the handle is oven-safe to 375°F (190°C).
• Large mixing bowl and whisk — Whisking the eggs and milk vigorously for 30 seconds aerates the mixture, creating a lighter frittata. A balloon whisk works best.
• Sharp chef’s knife and cutting board — Dicing the vegetables and ham into uniform pieces ensures even cooking. A clean knife also gives neat slices when portioning the finished frittata.
• Wire rack — Letting the frittata rest on a rack after baking prevents the bottom from steaming and keeps the texture firm yet moist.
• Spatula or offset palette knife — Helps loosen the edges if you want to slide the frittata onto a cutting board.

Step-by-Step Guide to Making Mary Berry Breakfast Frittata

Follow these steps closely, and you will get a perfectly puffed, custardy frittata every time. The order matters — do not skip the stovetop pre-set.

• Preheat and prep the pan — Set the oven to 375°F (190°C) with a rack in the middle. Place a 10-inch oven-safe skillet on the stovetop but do not oil it yet. The oven heat will finish cooking the top evenly.
• Whisk the egg mixture — Crack 8 large eggs into a large bowl, add 1/4 cup whole milk, and whisk vigorously for 30 seconds until frothy. Stir in 3/4 cup of the shredded cheddar, reserving the remaining 1/4 cup for topping.
• Sauté the aromatics — Heat 1 tablespoon olive oil in the skillet over medium heat until shimmering. Add the diced onion and cook, stirring occasionally, for 2 minutes until softened and translucent. Do not let it brown.
• Cook the vegetables — Add the diced bell pepper and sliced mushrooms. Cook for 3–4 minutes, stirring often, until the mushrooms have released their moisture and turned golden at the edges. The vegetables should be tender but not mushy.
• Warm the ham — Add the diced ham and cook for 1 minute, stirring, just to warm through. Spread the vegetable-ham mixture evenly across the bottom of the skillet in a single layer.
• Pour and set on the stovetop — Pour the egg mixture over the vegetables and ham. Gently tilt the pan to even out the liquid. Let it cook undisturbed over medium heat for 2 minutes — this sets the bottom and edges, preventing the eggs from seeping under the filling.
• Top and bake — Sprinkle the reserved 1/4 cup cheddar evenly over the top, then transfer the skillet immediately to the oven. Bake for 18–22 minutes, until the frittata is puffed, golden brown on top, and the center is just set. A knife inserted 1 inch from the edge should come out clean.
• Rest and slice — Remove the skillet from the oven and let the frittata rest on a wire rack for 5 minutes. The residual heat finishes setting the center and makes slicing cleaner. Slice into 4 wedges and serve directly from the skillet, or slide it onto a cutting board. Use a sharp chef’s knife and wipe the blade clean between cuts for neat portions.

What I Got Wrong (And How I Fixed It)

• Overwhisking the eggs — I once whisked for a full minute, which created too much foam. The frittata rose rapidly and then deflated. Whisk only until frothy (about 30 seconds) to keep the texture even.
• Skipping the stovetop set — I poured the eggs and put the pan straight into the oven. The bottom layer cooked fine, but the vegetables floated to the top. The 2-minute stovetop set locks the filling in place.
• Cooking the vegetables too long — Overcooked mushrooms and peppers release excess water, making the frittata soggy. Cook just until tender and the mushrooms are golden at the edges.
• Using a cold pan — Heating the oil in a cold pan caused uneven sautéing. Always heat the olive oil until shimmering before adding the onion.
• Cutting too soon — I sliced the frittata right out of the oven. The center was still slightly loose and didn’t hold its shape. Resting for 5 minutes lets the residual heat firm up the centre.
• Overbaking — I left it in the oven for 25 minutes because I wanted a darker top. The eggs turned rubbery. Stick to the 18–22 minute window and check at 18 minutes if your oven runs hot.

Healthier Version of Mary Berry Breakfast Frittata

• Reduce the cheese — Use 1/2 cup shredded cheddar instead of 1 cup. You will lose some richness, but the eggs and vegetables still provide plenty of flavour.
• Swap the ham — Replace the ham with turkey bacon or smoked turkey breast. Cook it first, then dice. This cuts the saturated fat by about 3 g per serving.
• Use egg whites — Substitute 4 of the whole eggs with 8 egg whites. This lowers the cholesterol and fat while keeping the protein high. The texture will be slightly less creamy.
• Add more vegetables — Bulk up the frittata with 1/2 cup of chopped spinach or courgette. Sauté the courgette with the mushrooms; add spinach just before pouring the eggs so it wilts slightly.
• Skip the milk — Replace the whole milk with unsweetened almond milk. The frittata will be a little less tender but still holds together well.

Ingredient Substitutions for Mary Berry Breakfast Frittata

• Sharp cheddar (1 cup) → Gruyère or Emmental (1 cup) — Gruyère melts smoothly and adds a nutty flavour. Emmental is milder but still gives that lovely golden top.
• Whole milk (1/4 cup) → Half-and-half (1/4 cup) — Half-and-half makes the eggs even creamier and richer, ideal if you are not counting calories.
• Red bell pepper (1/2 cup) → Roasted red pepper (1/2 cup) — Use jarred roasted pepper, drained and chopped. It adds a smoky sweetness and saves you the step of roasting fresh.
• White mushrooms (1 cup) → Shiitake mushrooms (1 cup, sliced) — Shiitakes have a deeper, more savoury flavour. Remove the stems before slicing.
• Cooked ham (4 oz) → Cooked bacon (4 oz, crumbled) — Bacon adds a smoky, crispy element. Cook it first, drain off the fat, and crumble before adding. Reduce the salt in the egg mixture because bacon is saltier.
• Olive oil (1 tbsp) → Butter (1 tbsp) — Butter gives a richer taste. Use unsalted to control the sodium level.

Pairing Ideas: What to Serve With Mary Berry Breakfast Frittata

A slice of this frittata is satisfying on its own, but a few thoughtful sides can turn it into a full brunch spread.

• Simple green salad — Toss mixed greens with a lemon vinaigrette. The acidity cuts through the richness of the eggs and cheese.
• Roasted cherry tomatoes — Halve and roast at 375°F (190°C) for 10 minutes. Their sweet, concentrated flavour pairs beautifully with the savoury frittata.
• Buttered toast or crusty bread — A slice of sourdough or wholemeal bread soaks up any excess eggy liquid and adds nice crunch.
• Fresh fruit salad — A bowl of sliced melon, berries, and orange segments provides a refreshing contrast to the warm, dense frittata.
• Yoghurt with granola — A dollop of Greek yoghurt topped with a little granola adds creaminess and crunch. It also bumps up the protein.
• Sparkling water with lemon — A light, bubbly drink cleanses the palate between bites and makes the meal feel more festive.

Expert Tips to Make Perfect Mary Berry Breakfast Frittata

• Whisk the eggs just until frothy — Over-whisking creates too many air bubbles that cause the frittata to puff unevenly and then collapse. Stop at the 30-second mark.
• Let the vegetables cool slightly before adding the eggs — If the pan is scorching hot, the eggs will scramble on contact. After cooking the vegetables, let the pan sit for 30 seconds before pouring the egg mixture.
• Tilt the pan gently after pouring — Do not stir the filling into the eggs. A gentle tilt distributes the liquid evenly without disturbing the vegetable layer underneath.
• Check doneness with a knife — Insert a knife 1 inch from the edge. If it comes out clean, the frittata is done. The centre will still look slightly moist, but it will finish setting during the 5-minute rest.
• Use a metal or silicone spatula for serving — A thin spatula slides under the wedges without breaking them. For cast iron, a fish turner works especially well.
• Wipe the knife blade between cuts — Residual egg and cheese on the blade can smear the next slice. A quick wipe keeps each wedge neat and presentable.
• Rest on a wire rack, not a flat surface — Placing the hot skillet directly on a counter traps steam underneath, making the bottom soggy. A wire rack allows air circulation so the base stays firm.

Creative Ways to Customize Mary Berry Breakfast Frittata

• Mediterranean twist — Replace the ham with 1/2 cup crumbled feta, add 1/4 cup chopped sun-dried tomatoes, and swap the bell pepper for roasted aubergine cubes. Omit the salt in the egg mixture because feta is salty.
• Southwest style — Use cooked chorizo instead of ham, 1/2 cup canned black beans (rinsed), and 1/4 cup chopped pickled jalapeños. Top with a dollop of sour cream before serving.
• Spring vegetable version — Omit the ham and double the mushrooms. Add 1/2 cup steamed asparagus tips (cut into 1-inch pieces) and 1/4 cup thawed frozen peas. Fold everything into the egg mixture before pouring.
• Cheese lovers’ frittata — Use a blend of cheddar, Gruyère, and Parmesan — 1/2 cup total, but keep the remaining 1/4 cup for the top. The Parmesan adds a salty, umami kick.
• Herby garden frittata — Stir 2 tablespoons of chopped fresh chives, 1 tablespoon of fresh dill, and 1 teaspoon of fresh thyme into the egg mixture. Herbs brighten the flavour without adding any extra calories.
• Potato and onion base — Replace the ham and mushrooms with 1 cup of thinly sliced cooked potato (leftovers work) and caramelised onions. Layer the potatoes on the bottom of the skillet, then pour the eggs.

Storing Mary Berry Breakfast Frittata the Right Way

• Refrigerator storage — Place leftover wedges in an airtight container, layered with parchment paper between slices if stacking. They will keep for up to 3 days.
• Freezing individual portions — Wrap each slice tightly in plastic wrap, then wrap again in aluminium foil. Freeze for up to 1 month. This double layer prevents freezer burn.
• Thawing before reheating — Transfer frozen slices to the refrigerator and let them thaw overnight. Do not microwave frozen slices directly — the texture turns rubbery.
• Keeping the frittata whole — If you plan to serve it within 24 hours, leave the whole frittata in the skillet, cover with foil, and refrigerate. Reheat gently in the oven at 350°F (177°C) for 10 minutes.
• Avoid plastic wrap on warm frittata — Let the frittata cool completely (about 30 minutes at room temperature) before wrapping. Warm frittata trapped in plastic will steam and become soggy.

How to Reheat Mary Berry Breakfast Frittata (If Needed)

• Oven method — Place slices on a baking sheet and heat at 350°F (177°C) for 8–10 minutes. This restores the puffed top and keeps the centre moist. Do not exceed 12 minutes or the eggs will dry out.
• Microwave method — Use medium power (50% power) for 1 minute per slice. Cover the slice with a damp paper towel to add steam. Check after 45 seconds; if not hot, continue in 15-second bursts.
• Air fryer method — Set the air fryer to 300°F (150°C) and reheat for 3–4 minutes. The rapid air circulation crisps the edges slightly without toughening the eggs.
• Stovetop method — Place a slice in a nonstick skillet over low heat, add a teaspoon of water, and cover with a lid. Steam for 2–3 minutes until hot. This is a gentle option that avoids any microwave rubberiness.

Nutritional Breakdown (per serving)

Based on 1 serving = 1 wedge (4 wedges total from the entire frittata).

• Calories: 350
• Protein: 26g
• Fat: 25g
• Saturated Fat: about 9g
• Carbohydrates: 5g
• Fiber: around 1g
• Sugar: roughly 3g
• Sodium: 860mg
• Cholesterol: about 370mg

FAQs

Can I make Mary Berry Breakfast Frittata ahead of time for a party?

Yes. Prepare and bake the frittata up to a day ahead. Let it cool completely, cover, and refrigerate. Reheat in a 350°F (177°C) oven for 10 minutes before serving. The texture stays close to fresh-baked.

How do I prevent the frittata from sticking to the pan?

Use a well-seasoned cast-iron skillet or a nonstick pan. Also, cook the frittata on the stovetop for 2 minutes before baking — that initial set creates a nonstick layer. If you are worried, grease the pan with an extra teaspoon of butter before adding the oil.

What is the best pan size for Mary Berry Breakfast Frittata?

A 10-inch oven-safe skillet is ideal. If you use a 9-inch pan, the frittata will be thicker and may need 2–3 extra minutes of baking. An 11-inch pan will produce a thinner, faster-cooking frittata — check at 15 minutes.

Can I freeze Mary Berry Breakfast Frittata with vegetables like peppers and mushrooms?

Absolutely. The texture of cooked mushrooms and peppers holds up well after freezing and thawing. Just follow the double-wrap method (plastic wrap then foil) and thaw overnight in the fridge. Reheat in the oven for the best results.

Why did my frittata turn out watery?

This usually happens if the mushrooms were not cooked long enough to release their moisture. Make sure to cook them until they are golden at the edges and any released liquid has evaporated. Also, avoid using wet vegetables like canned tomatoes without draining them thoroughly.

How long does Mary Berry Breakfast Frittata last in the fridge?

Stored in an airtight container, it keeps well for up to 3 days. After that, the eggs start to lose moisture and the texture becomes dry. Label the container with the date so you remember.

Wrapping It Up

The Mary Berry Breakfast Frittata is a reliable one-pan meal that delivers every time — fluffy eggs, tender vegetables, ham, and a golden cheese crust. It works for a quiet weekday breakfast or a busy brunch with friends. Give it a try this weekend, and you will see why it earns a regular spot in my kitchen.

Mary Berry Breakfast Frittata

Print Recipe

Print Recipe

A hearty, oven-baked frittata packed with tender vegetables, diced ham, and sharp cheddar cheese. Fluffy eggs set into a golden, slightly puffed top with a moist, custard-like interior — perfect for a satisfying breakfast or brunch.

• Author: Ekani Ella
• Prep Time: 15
• Cook Time: 25
• Total Time: 40
• Yield: 4 1x
• Category: Breakfast
• Method: Baking
• Cuisine: British

Ingredients

Scale 1x2x3x

• 8 large eggs
• 1/4 cup whole milk
• 1 cup shredded sharp cheddar cheese (about 4 oz)
• 1 tablespoon olive oil
• 1/2 cup yellow onion, finely diced
• 1/2 cup red bell pepper, seeded and diced into 1/4-inch pieces
• 1 cup white mushrooms, cleaned and sliced 1/4-inch thick
• 4 ounces cooked ham, diced into 1/2-inch cubes (about 1 cup)
• 1/2 teaspoon kosher salt
• 1/4 teaspoon freshly ground black pepper

Instructions

1. Preheat the oven to 375°F (190°C) with a rack in the middle position. Place a 10-inch oven-safe nonstick skillet or cast-iron pan on the stovetop — do not oil yet. The oven heat ensures even cooking for the frittata top.
2. Crack the eggs into a large bowl and add the milk. Whisk vigorously for 30 seconds until the eggs are frothy and fully combined — this aerates the mixture giving a lighter texture. Stir in 3/4 cup of the shredded cheddar, reserving the remaining 1/4 cup for topping.
3. Heat the olive oil in the skillet over medium heat until shimmering. Add the diced onion and cook, stirring occasionally, for 2 minutes until softened and translucent. Do not let it brown.
4. Add the diced bell pepper and sliced mushrooms to the skillet. Cook for 3-4 minutes, stirring often, until the mushrooms have released their moisture and turned golden at the edges. The vegetables should be tender but not mushy.
5. Add the diced ham to the skillet and cook for 1 minute, stirring, just to warm through. Spread the vegetable-ham mixture evenly across the bottom of the skillet in a single layer.
6. Pour the egg mixture over the vegetables and ham. Gently tilt the pan to ensure even distribution. Let the frittata cook undisturbed on the stovetop over medium heat for 2 minutes — this sets the bottom and edges, preventing the eggs from seeping under the filling.
7. Sprinkle the reserved 1/4 cup cheddar evenly over the top of the frittata. Transfer the skillet to the preheated oven immediately.
8. Bake for 18-22 minutes, until the frittata is puffed, golden brown on top, and the center is just set — a knife inserted 1 inch from the edge should come out clean. The eggs should be firm but still moist; avoid overbaking which will make them rubbery.
9. Remove the skillet from the oven and let the frittata rest on a wire rack for 5 minutes. During this time, the residual heat finishes setting the center and makes slicing cleaner.
10. Slice the frittata into 4 wedges and serve directly from the skillet, or slide it onto a cutting board. For neat portions, use a sharp chef’s knife and wipe the blade clean between cuts.

Notes

Store leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, place slices on a baking sheet in a 350°F (177°C) oven for 8-10 minutes until warmed through, or microwave on medium power for 1 minute. The frittata can be frozen for up to 1 month; wrap individual slices tightly in plastic wrap and then foil. Thaw overnight in the fridge before reheating. Do not reheat from frozen in the microwave as it will become rubbery.

Nutrition

• Calories: 350
• Sugar: 3g
• Sodium: 860mg
• Unsaturated Fat: 8g
• Carbohydrates: 5g
• Fiber: 1g
• Protein: 26g
• Cholesterol: 372mg

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