INGREDIENTS
1/2 cup
butter, (softened)
3/4 cup
sugar
1
egg + 1 egg yolk, (room temperature)
2 tsp
vanilla extract
1 1/2 cups
flour (or gluten free all-purpose flour (I always use Cup 4 Cup gluten free flour))
1/4 tsp
salt
1 tsp
baking powder
1/2 tsp
baking soda
1 1/2 tsp
cornstarch
1/2 cup
rainbow sprinkles - not nonpareils (little ball kind because the color will bleed into the dough)
3/4 cup
butter, (softened)
2 1/4 cups
powdered sugar
3 tbsp
heavy cream
1 tsp
vanilla extract
salt
food coloring, (optional)
extra sprinkles for decorating top