INGREDIENTS
1/2 cup
salted butter
3/4 cup
granulated sugar
1
large egg
1
egg yolk
1 1/2 cups
all-purpose flour
1 tbsp
cornstarch
1 tsp
baking powder
1/2 tsp
baking soda
1/4 tsp
salt
3/4 cup
m&m's
1/4 cup
mini m&m's
4 tbsp
butter
3 1/2 tbsp
cocoa powder
1 1/2 cups
powdered sugar
1/2 tsp
vanilla
1 tbsp
milk
M&M's
Sprinkles