INGREDIENTS
1/2 cup
unsalted butter, softened to room temperature
3/4 cup
sugar
1
large egg, room temperature
1/4 cup
sour cream, room temperature
1 tsp
pure vanilla extract
1 1/2 cups
all purpose flour (measured correctly using scoop and level method)
1 tbsp
cornstarch
1/2 tsp
baking powder
1/4 tsp
baking soda
1/4 tsp
salt
Frosting
1/2 cup
unsalted butter, at room temperature
1 tbsp
shortening (*optional - to develop that harder crust)
1 tsp
pure vanilla extract
2 cups
powdered sugar
salt
3 tbsp
heavy cream
food coloring to color frosting (optional)
candy sprinkles to decorate (optional)