INGREDIENTS
1 cup
butter, softened
1 1/2 cups
sugar
3
eggs
2
egg whites
3 1/3 cups
flour
1 tsp
baking soda
1/2 tsp
baking powder
1 tsp
salt
1 tbsp
cinnamon
1/2 tsp
nutmeg
1 cup
sour cream
1/3 cup
milk
1 tbsp
vanilla
1 1/2 cups
fresh or frozen blueberries
1/2 cup
butter, softened
8 oz
cream cheese
2 tsp
Mapleine (maple flavoring)
4 cups
powdered sugar
Milk, as needed