INGREDIENTS
1
Egg, large
2 3/4 cups
All purpose flour
2 tsp
Baking powder
1/4 tsp
Baking soda
1
Food coloring
1 cup
Granulated sugar
5 cups
Powdered sugar
1/4 tsp
Salt
4 tsp
Vanilla, pure
1/2 cup
Butter, unsalted
6 tbsp
Butter
6 tbsp
Milk
1/2 cup
Sour cream
Sprinkles and other decorations (, optional)