INGREDIENTS
3/4 cup
Blackberries or blueberries
6
Eggs, large
1 1/2 cups
All-purpose flour
2 1/4 tsp
Baking powder
3/4 tsp
Baking soda
3 cups
Cake flour
1 tbsp
Cocoa powder, unsweetened
1
Gel-paste food coloring
1
Salt, Coarse
2 1/4 cups
Sugar
1 tbsp
Vanilla extract, pure
2 sticks
Butter, unsalted
2 cups
Buttermilk, low-fat
Easy Buttercream