Mary Berry All-in-One Cupcakes are light, chocolate-flavoured cupcakes made using the all-in-one method—where dry and wet ingredients are mixed together in one go. This creates a smooth batter with minimal effort and produces evenly risen, perfectly soft cupcakes every time.
100g soft butter
100g caster sugar
100g self-raising flour
2 tbsp cocoa powder
1 tsp baking powder
2 large eggs
2 tbsp milk
1 tsp vanilla extract (optional)
75g butter (softened)
150g icing sugar
1 tbsp cocoa powder
1–2 tbsp milk
Line the tin: Place paper cases into the cupcake tray for easy removal.
Add all ingredients: Put butter, sugar, eggs, flour, cocoa, baking powder, milk, and vanilla into one bowl.
Mix until smooth: Beat everything together for 1 minute until the batter is creamy and lump-free.
Fill cases evenly: Spoon the mixture into cases, filling them about two-thirds full.
Bake the cupcakes: Bake at 180°C (350°F) for 15–18 minutes until risen.
Check doneness: Insert a skewer; it should come out clean.
Cool completely: Let cupcakes cool on a wire rack before icing.
Make the icing: Beat butter, icing sugar, and cocoa until fluffy, adding milk for softness.
Decorate gently: Pipe or spread icing onto cooled cupcakes and finish with sprinkles if desired.