INGREDIENTS
1 tsp
baking powder
1 tsp
baking soda
1 cup
butter
1 large
egg
1 large
egg yolk
2 cups
flour
1/2 cup
granulated sugar
1 cup
light brown sugar
1 1/2 cups
m&ms
1 cup
old-fashioned oats
1 tsp
salt
1 1/2 cups
semisweet chocolate chips
1 tbsp
vanilla extract