Ingredients: (Makes 12)  
170g/6oz plain flour
1 heaped tsp baking powder
110g/4oz caster sugar
110g/4oz margarine
3 eggs
2 tbsp cocoa powder
Nutella

Method:
1. Preheat the oven to 190°C and line a muffin tin with cupcake paper cases.
2. Put all ingredients except Nutella into a bowl and beat until smooth.
3. Spoon half of the mixture into the cases, put a teaspoon of Nutella into each case and cover with the other half of the mixture.
4. Bake for 20 mins, leave to cool and serve sprinkled with some icing sugar.