Spread 1 1/3 cups batter into the prepared pan. Bake for about 5 to 9 minutes, or until small, brown spots begin to appear on cake. Remove the cake from the oven, and remove layer from pan with a spatula. Dust the cake lightly with flour, and place on a rack to cool. Grease pan again, and repeat this process until all of the batter is used, about 6 times more. Place the layers between wax paper, and cover with a towel. Chill layers for a few hours. Make the Chocolate Buttercream.