INGREDIENTS
2 1/2 cups
flour
1/2 tsp
baking powder
1/2 tsp
salt
1/2 cup
unsalted butter ((softened))
1 cup
sugar
1
large egg
2 tbsp
sour cream
1 tsp
vanilla extract
5 tbsp
butter ((softened))
3 tbsp
milk
1 tbsp
vanilla
4 cups
powdered sugar
3
drops food coloring