Ingredients:

• ¾ cup butter
• 1+½ cup sugar
• 2 teaspoon vanilla
• 3 eggs
• ¾ cup all-purpose flour
• ½ cup cocoa powder
• 1 teaspoon baking powder
• a pinch of salt (optional)
• 3 oz walnuts (optional)

Method:

• Preheat oven to 350 deg F (Gas mark 4 or 180 deg C).
• Line a 13 x 9 in (33 x 23 cm) cake tin with grease proof or other non-stick paper and grease the tin. Melt the butter.
• Beat eggs with sugar, and add vanilla, flour, cocoa, baking powder, salt (optional) and melted butter.
• Add chopped nuts.
• Bake at 350 degrees until a wooden pick inserted in center comes out clean, approximately 20-30 minutes.
• Cool the cake.
• Dust with powdered sugar or glace with your favorite chocolate frosting.