Super-fudge (choc) brownies (made with cocoa)

7oz butter
2oz cocoa powder
2 cups sugar
4 large eggs, beaten
1 cup plain flour
1 tsp baking powder
1/4 tsp salt
1 tsp vanilla essence
3/4 cup chopped nuts or mini-marshmallows (optional)

1. Preheat oven to 180C/350F/Gas 4. Take a 9"x13" baking/roasting dish. Cut a piece of foil, mould to shape of dish, then place in dish and spray or grease foil.
2. Melt butter in saucepan or bowl. Stir in cocoa.
3. Remove from heat and stir in sugar. Beat in eggs one at a time.
4. Stir in flour, salt and baking powder, then add vanilla essence, nuts etc.
5. Pour into tin, spreading evenly. Bake 25-30 mins until moist and fudgy. Test with cake tester or fork - it should come out with sticky crumbs attached.
6. Remove from pan when cool. Cut into squares. Decorate with melted white chocolate if desired.

NB These freeze well.