INGREDIENTS
1
Egg, large
1 2/3 cups
All-purpose flour
1/2 tsp
Baking powder
1/4 tsp
Baking soda
1/4 cup
Brown sugar, light
3 cups
Powdered sugar
1/2 tsp
Salt
1 dash
Salt
3/4 cup
Sugar
1 3/4 tbsp
Vanilla
1 1/2 cups
Butter, unsalted
1/4 cup
Half-and-half
3/4 cup
Milk
1/4 cup
Sour cream
2
sprinkles Not nonpareils