INGREDIENTS
1
Egg, large
1 3/8 cups
All purpose flour
1/2 tsp
Baking powder
1/2 tsp
Baking soda
1
Frosting
1 3/4 cups
Powdered sugar
1 pinch
Salt
1/2 cup
Sugar
1 tsp
Vanilla
1
Cake
1/2 stick
Butter, salted
3 tbsp
Butter, salted
2 1/3 tbsp
Heavy whipping cream
1/4 cup
Sour cream
+sprinkles (optional)