Recipe (found recipe on Baked Perfection)
1 cup all-purpose flour
1/2 teaspoon baking powder
1/8 teaspoon baking soda
1/2 teaspoon salt
1/3 cup butter, melted
1 cup packed brown sugar
1 tablespoon vanilla extract
1 cup to 1 1/3 cup M&M's
Preheat oven to 350 degrees. Grease a 9" square pan.
In a medium bowl, mix the flour, baking powder, baking soda, and salt together. Set aside.
In a mixing bowl, mix together the brown sugar and melted butter. Add the egg and vanilla and mix well. Slowly add the flour mixture until fully incorporated. Add 1 C of M&Ms and pour into baking pan. Sprinkly 1/3 C of M&Ms on top.