INGREDIENTS
3 tbsp
unsalted butter, at room temperature
1/3 cup
granulated sugar
1
large egg yolk
4 tbsp
heavy cream*
1 tsp
vanilla extract
1 cup
all-purpose flour
1/2 tsp
baking powder
1/8 tsp
fine sea salt
5 tbsp
unsalted butter, at room temperature
3/4 cup
powdered sugar
1/2 tsp
vanilla extract
1/2 tsp
heavy cream
sprinkles!