Preheat oven to 350 degrees. Grease two 8-by- 12-inch cake pans, and line bottom with parchment paper. Sift cocoa powder, flour, baking powder, and salt into a medium bowl; set aside. Put butter ...
Set aside and get on to making the cake batter, which is really quick. 2. Place the flour in a large bowl along with the caster sugar, cocoa powder, baking powder and bicarbonate of soda.