INGREDIENTS
1 1/4 cups
fresh blackberries, fresh
1
Blackberries
1/4 cup
egg whites
1 1/4 cups
bleached cake flour, bleached
3/4 cup
sugar
1 1/4 tsp
Baking powder
1/4 tsp
Baking soda
1/8 tsp
Cinnamon, ground
1
batch Cream cheese frosting
1/4 tsp
Diamond crystal kosher salt
8 tbsp
unsalted butter, unsalted