INGREDIENTS
1 3/4 cups
all-purpose flour
1 3/4 tsp
baking powder
1/4 tsp
baking soda
1/4 tsp
salt
5 tbsp
butter (softened)
1 cup
sugar
2
large egg yolks (room temperature)
1 tsp
vanilla
1 cup
sour cream or plain yogurt (room temperature)
2
large egg whites (room temperature)
1/8 tsp
cream of tartar
1/2 cup
salted butter, softened
1 1/2 cups
powdered sugar
1/8 tsp
salt
8 oz
cream cheese, softened
1 6 ounce container
blackberries, washed, divided
1/4 tsp
vanilla