Loaded M&M Oreo Cookie Bars

5 from 16 votes

These Loaded M&M Oreo Cookie Bars are chewy, minty, and a perfect dessert to make for St. Patrick's Day.

Prep Time15

Cook Time40

Total Time55

Course: Dessert

Cuisine: American

Servings: Bars

Calories: 1164kcal

Preheat your oven to 350 degrees.
Using a stand mixer, cream together the melted butter, sugar and brown sugar until combined.
Mix in the eggs and egg yolks one at a time, mixing well after each egg.
Mix in the vanilla.
In a medium bowl, mix together the flour, cornstarch, baking powder and salt.
Gradually stir dry ingredients into the wet until completely combined.
Mix in 1 ½ C chocolate chips, 1 ½ C M&M’s and half of the chopped Oreos.
Spread the batter into the baking dish and top with remaining chocolate chips, M&M’s and chopped Oreos.
Bake 40 minutes or until edges just begin to turn golden brown.
Allow to cool before cutting and enjoying.

Make sure that you are using melted butter and not softened butter for this recipe.
Measure out all of your ingredients before you begin baking, so that everything is ready when needed.
Also, be sure to let these bars cool completely before cutting and serving so that they hold their shape.
I prefer to use unsalted butter when baking, but salted butter can be used instead.
To test for doneness insert a toothpick into the center of the cookie bars, if it comes out with a few moist crumbs then they are done.
If you don't have parchment paper, you can spray your baking dish well with nonstick cooking spray instead. Make sure to spray the sides of the pan well.
If you want to add a little saltiness to this recipe, sprinkle some chopped pretzels or chocolate-covered pretzels on the top of the bars and then press them down with a spatula.