256g all-purpose flour
2 tsp baking powder
200g white sugar
125g unsalted butter, softened
1 tsp vanilla extract
15g unsweetened cocoa powder
- Preheat oven to 350 degrees F (175 degrees C). Grease and flour a 9 inch round pan.
- Place flour, baking powder, salt, sugar, butter or margarine, eggs, vanilla, and milk into mixing bowl. Beat slowly to moisten, and then beat with an electric mixer at medium speed for about 2 minutes until smooth. Reserve 3/4 cup batter; pour the remainder into pan.
- Stir cocoa into the 3/4 cup reserved batter. Drop by spoonfuli over top of white batter. Using a knife, swirl the cocoa batter into the white batter to incorporate it in a marble effect.
- Bake in preheated oven for 30 to 35 minutes, until an inserted wooden pick comes out clean.