INGREDIENTS
1
Egg, room temperature (57 grams), large
1 1/4 cups
All-purpose flour
1 1/2 tsp
Baking powder
4 cups
Powdered sugar
1/3 cup
Rainbow jimmies / long sprinkles
3/4 tsp
Salt
1 pinch
Salt
1 cup
Sugar
1 2/3 tbsp
Vanilla
1/4 cup
Vegetable oil
1 cup
Butter, unsalted
1 tbsp
Heavy cream
1/2 cup
Sour cream
1/2 cup
Water