Mary Berry Walnut and Chocolate Brownies Recipe

Mary Berry Walnut and Chocolate Brownies are rich, fudgy, and deeply chocolatey, with crunchy walnuts adding contrast to every bite. These brownies strike the perfect balance between a soft, dense centre and a lightly crisp top. Ideal for afternoon tea, dessert tables, or make-ahead treats, they’re quick to prepare and deliver reliable results with classic flavours that never go out of style.

What Are Mary Berry Walnut and Chocolate Brownies?

Mary Berry Walnut and Chocolate Brownies are traditional British-style brownies made with melted dark chocolate, butter, sugar, eggs, and flour, finished with chopped walnuts folded through the batter. Unlike cake-like brownies, these are designed to be moist and fudgy, with the nuts providing texture and a subtle bitterness that complements the sweetness of the chocolate.

Other Popular Mary Berry Recipes

• Mary Berry Herby Chicken Casserole
• Mary Berry Cheese Straws
• Mary Berry Mincemeat Muffins
• Best Apple Cake Recipe Ever by Mary Berry

Why This Recipe Is Worth Trying

• Deep chocolate flavour – Uses real chocolate, not just cocoa.
• Fudgy texture – Soft centre with a slight crust on top.
• Crunchy contrast – Walnuts add bite and balance.
• Simple method – No complicated techniques required.
• Perfect for sharing – Easy to slice and serve.

Essential Ingredients to Make Mary Berry Walnut and Chocolate Brownies

• 200g dark chocolate (70% cocoa preferred), broken into pieces
• 200g butter, cubed
• 250g caster sugar
• 3 large eggs
• 100g plain flour
• 50g cocoa powder
• 150g walnuts, roughly chopped
• 1 teaspoon vanilla extract
• Pinch of salt

Handy Kitchen Tools for Best Results

• Heatproof bowl
• Saucepan
• Mixing bowl
• Whisk or wooden spoon
• Baking tin (approx. 20 × 30 cm)
• Baking parchment
• Cooling rack

Step-by-Step Guide to Making Mary Berry Walnut and Chocolate Brownies

• Prepare the tin – Line the baking tin with parchment and preheat the oven to 180°C (350°F).
• Melt chocolate and butter – Place both in a heatproof bowl set over simmering water and stir gently until smooth.
• Add sugar – Remove from heat and stir in the sugar until fully combined.
• Mix in eggs – Beat in the eggs one at a time, followed by the vanilla extract.
• Fold in dry ingredients – Sift in the flour, cocoa powder, and salt, folding gently to keep the mixture dense.
• Add walnuts – Fold in the chopped walnuts evenly through the batter.
• Transfer to tin – Pour the mixture into the prepared tin and smooth the surface.
• Bake gently – Bake for 25–30 minutes until the top is set, but the centre still feels slightly soft.
• Cool completely – Allow to cool in the tin before lifting out and slicing.

What I Got Wrong (And How I Fixed It)

• Brownies turned cakey – Reduced baking time slightly.
• Centre overbaked – Checked earlier and removed while still soft.
• Walnuts sank – Tossed them lightly in flour before folding in.
• Top cracked too much – Lowered oven temperature slightly.

Healthier Version of Mary Berry Walnut and Chocolate Brownies

• Reduce sugar by 20% without affecting texture too much.
• Use 70–85% dark chocolate for less sweetness.
• Replace half the butter with Greek yoghurt.
• Use wholemeal flour for added fibre.
• Reduce portion size by cutting smaller squares.

Ingredient Substitutions for Mary Berry Walnut and Chocolate Brownies

• Swap walnuts for pecans or hazelnuts.
• Use milk chocolate for a sweeter brownie.
• Replace cocoa powder with extra dark chocolate.
• Use gluten-free plain flour if required.
• Add chocolate chips for extra richness.

Pairing Ideas: What to Serve With Mary Berry Walnut and Chocolate Brownies

• Serve with vanilla ice cream – A classic contrast.
• Add whipped cream – Lightens the richness.
• Pair with coffee – Enhances the chocolate flavour.
• Serve with berries – Cuts through sweetness.
• Dust with icing sugar – Simple and elegant.

Expert Tips to Make Perfect Mary Berry Walnut and Chocolate Brownies

• Do not overbake – Slight softness ensures fudginess.
• Use good-quality chocolate – Flavour depends on it.
• Fold gently – Keeps texture dense, not airy.
• Cool before slicing – Prevents crumbling.
• Line the tin well – Makes removal easy.
• Clean knife between cuts – Neater slices.

Creative Ways to Customize Mary Berry Walnut and Chocolate Brownies

• Add orange zest for brightness.
• Swirl in peanut butter for richness.
• Include dried cherries for contrast.
• Top with sea salt for balance.
• Add espresso powder to deepen flavour.

Storing Mary Berry Walnut and Chocolate Brownies the Right Way

• Store in an airtight container at room temperature for up to 3 days.
• Refrigerate for a firmer texture if preferred.
• Freeze individual slices for up to 2 months.
• Wrap tightly to prevent drying.
• Defrost fully before serving.

How to Reheat Mary Berry Walnut and Chocolate Brownies

• Warm briefly in the microwave for 10–15 seconds.
• Heat in a low oven for a softer centre.
• Avoid overheating to keep them fudgy.

Nutritional Breakdown (per slice)

• Calories: ~380
• Carbohydrates: 42g
• Fat: 22g
• Protein: 6g
• Fibre: 3g
• Sugar: Moderate

Print

FAQs

Why are my brownies cakey instead of fudgy?

Brownies turn cakey when they are overbaked or when too much air is beaten into the batter. Mix gently once the eggs are added and remove the brownies while the centre is still slightly soft—they will firm up as they cool.

How do I know when walnut brownies are perfectly baked?

The top should look set and slightly cracked, while the centre still feels soft when lightly pressed. A skewer inserted should come out with a few moist crumbs, not completely clean.

Should I toast walnuts before adding them to brownies?

Toasting walnuts is optional but recommended. Lightly toasting them enhances flavour and keeps them crunchy, especially in rich chocolate batters.

Why do my brownies crumble when slicing?

Brownies crumble when sliced while warm. Let them cool completely in the tin, then use a sharp knife wiped clean between cuts for neat slices.

Wrapping It Up

Mary Berry Walnut and Chocolate Brownies are a dependable, indulgent bake that never disappoints. With their rich chocolate base and crunchy walnuts, they’re perfect for sharing, gifting, or enjoying as a simple homemade treat. Easy to prepare and endlessly adaptable, this is a recipe you’ll return to whenever a proper brownie craving hits.