INGREDIENTS
1 stick
butter, at room temperature
1/2 cup
brown sugar
1/4 cup
sugar
1
egg
1/2 tsp
baking soda
1/4 tsp
salt
1 cup
plus 2 tablespoons flour
1 cup
semi-sweet chocolate chips
1 can
sweetened condensed milk
1
bag (12 ounces) milk chocolate chips
15
fun size Heath bars, cut into chunks