Preheat the oven according to the directions on the brownie box.
Liberally butter the sides and bottom of a tart pan. I suggest using one with a removable bottom.
Place the tart pan on another baking sheet. Pour the brownie mix into the pan.
Bake for 30-40 minutes or until a toothpick inserted in the center comes out clean.
Allow the brownie to cool completely before unmolding it.
Top the brownie with chocolate buttercream.
Arrange the m&ms to form a turkey.
I felt like it was easiest to start with the turkey’s feet and then create an outline of his body using brown m&ms.
Begin to add his feathers, going in any color order or making any kind of pattern you want. Then fill in his body with brown m&ms. Add a beak, I used 2 m&ms cut in half and 1 whole m&m. Add candy eyes, using extra buttercream to act as glue.