INGREDIENTS
2 cups
all-purpose flour
1/2 tsp
baking soda
1/2 tsp
salt
3/4 cup
unsalted butter (melted and cooled)
1 cup
light brown sugar (packed)
1/2 cup
granulated sugar
1 tbsp
vanilla bean paste (or extract)
1
egg
1
egg yolk
1 cup
semi-sweet chocolate chips
1 cup
holiday M&M's (or M&M's of your choice)
1
recipe The best fluffy buttercream frosting (optional)