Fudgy brownies monster cookie bars are an easy brookie bars recipe that is the combination of a brownie mix with a peanut butter cookie dough mix with the addition of oatmeal, peanut butter, chocolate chips, m&m's and peanut butter chips.
Mix the brownie mix together based on package directions and bake for 10 minutes.
While the brownies are baking, mix together the peanut butter cookie mix together according to the package directions.
Stir the chocolate and peanut butter chips, m&m's, oatmeal, and peanut butter into the cookie dough.
Then drop crumbled pieces of the chocolate chip cookie dough over brownie mix or press out on a baking matt and lay over the brownies.
Bake on 350 for 20 minutes or until the cookie top is golden brown.
Let cool for 15 minutes before cutting.
Notes
Properly Grease the Pan:
To ensure easy removal and a clean presentation, thoroughly grease the baking pan or line it with parchment paper.
Testing Doneness:
Use a toothpick to check the doneness of the bars. Insert it into the center, and if it comes out with a few moist crumbs (but not wet batter), the bars are ready.