Preheat oven to 375 line a baking sheet with parchment paper.
In a large mixing bowl combine brownie mix and flour.
18.9 ounces brownie mix, ¼ cup all-purpose flour
Add in eggs, water and melted butter, mix until well blended. The dough will be thick.
2 eggs, 1 Tbsp water, ¼ cup butter
Fold in chocolate chips and ¾ cup of the M&M’s until well mixed.
½ cup chocolate chips, 1 cup M&M’s
Scoop out dough 1 tablespoon at a time, roll into a ball and place on prepared cookie sheet about 2 inches apart.
Bake 10-13 minutes or until the top is cracked and appears dry.
Remove from the oven and immediately press the extra M&M’s into the tops of the cookies.
Allow to cool on the baking sheet for about 3 minutes and then move to a cooling rack to cool completely.