M&M Studded Fudgy Oreo- Chunk Brownies

You've gotta love seasonally themed- M&M's. They can make anything festive. My favorite Oreo-Chunk Brownies are good enough on their own, but the addition of M&M's gives them a little Halloween Pizzazz.These brownies are baked on a foil-lined rimmed baking sheet (12 x 18-inches). After an overnight chill, the foil aides in lifting the entire giant brownie out of the pan. The foil is then peeled