Preheat the oven to 350 F. 

In a small bowl, combine the flour, cocoa, baking soda and salt. In a large bowl, use an electric mixer to beat together sugars, butter, and vanilla. Add the eggs, one at a time. Then gradually stir in the flour/cocoa mixture. Fold in the chocolate chunks and m&ms. I always save a few for sprinkling on the tops of the cookies.

Use a tablespoon to scoop the dough and place 2 inches apart on a baking sheet. Bake for 9 to 11 minutes and top with the remaining chocolate and m&ms.