M&M Oreo Cookie Bars
If you have a craving for Oreos, I have the perfect dessert recipe for you. Loaded M&M Oreo Cookie Bars are easy to make and they are so delicious that everyone who tries one will ask for a second!
Oreos are a classic treat that in my opinion qualifies as comfort food. They are yummy on their own, dunked in milk, or better yet, covered in chocolate! My Loaded M&M Oreo Cookie Bars recipe takes all of the flavour of Oreo cookies and makes them even better in the form of a cookie bar with all the fixings.

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This Loaded M&M Oreo Cookie Bar recipe includes golden and regular Oreos and M&M’s for a total chocolatey treat! You will be glad the recipe makes 24 servings because these are perfect for sharing! These cookie bars make me believe in love at first bite. I have a feeling you will love them as much as I do!
The recipe creates a chewy bar cookie that is reminiscent of brownies, it has a soft dough but so many crunchy goodies inside that set this recipe off with a texture that is nothing short of craveable. I used milk chocolate M&M Minis in my Oreo Cookie Bars, but I have used peppermint M&M’s and peppermint bark Oreo cookies at Christmas time.
Loaded M&M Oreo Cookie Bars
Ingredients
- 1 C unsalted sweet cream butter, melted
- 1 1/4 C sugar
- 1/2 C light brown sugar
- 2 eggs + 1 egg yolk
- 2 tsp vanilla extract
- 2 1/2 C all-purpose flour
- 2 tsp cornstarch
- 1 /2 tsp baking powder
- 1 tsp of salt
- 1 C mini semisweet chocolate chips
- 2 C chopped (16) Oreos
- 2 C chopped (16) Golden Oreos
- 1 C Mini M&M’s
Directions
1. Preheat oven to 350 degrees.
2. Line a 9×9 baking dish with parchment paper.
3. In a standing mixer, combine the melted butter, sugar and light brown sugar and mix until combined
4. Add the two eggs, and one egg yolk one at a time. Mixing well after each egg.
5. Stir in vanilla extract.
6. Mix together using a whisk, the flour, cornstarch, baking powder, and salt in a second bowl.
7. Gradually add dry ingredients into wet ingredients. Mix until combined.
8. Now mix in the chocolate chips, 1/2 C mini M&M’s, 1 C Oreos, and 1 C Golden Oreos.
9. Pour the cookie batter into the pan and use a rubber spatula to evenly spread the batter.
10. Sprinkle the remaining mini M&M, 1 C Oreos and 1 C Golden Oreos onto the top of the cookie bar batter
11. Bake in your preheated oven for 35-40 minutes or until edges just begin to turn golden brown and a toothpick inserted in the center comes out clean.
12. Remove from oven slightly cooling before cutting and serving.
I love to serve these Oreo Madness Cookie Bars at potlucks. They are always the first thing to disappear at any gathering!

Looking for more cookie recipes? Why not give our Keto Chocolate Chip Cookie Dough or our Meringue Heart Cookies a try!
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M&M Oreo Cookie Bars
This Loaded M&M Oreo Cookie Bar recipe includes golden and regular Oreos and M&M’s for a total chocolatey treat!
Ingredients
- 1 cup unsalted sweet cream butter melted
- 1 1/4 cup granulated sugar
- 1/2 cup light brown sugar
- 2 eggs
- 1 egg yolk
- 2 tsp vanilla extract
- 2 1/2 cup all purpose flour
- 2 tsp cornstarch
- 1/2 tsp baking powder
- 1 tsp salt
- 1 cup mini semisweet chocolate chips
- 2 cup Oreos chopped
- 2 cup Golden Oreos chopped
- 1 cup mini M&M's
Instructions
-
Preheat oven to 350 degrees.
-
Line a 9×9 baking dish with parchment paper.
-
.In a standing mixer, combine the melted butter, sugar and light brown sugar and mix until combined.
-
Add the two eggs, and one egg yolk one at a time. Mixing well after each egg.
-
Stir in vanilla extract.
-
Mix together using a whisk, the flour, cornstarch, baking powder, and salt in a second bowl.
-
Gradually add dry ingredients into wet ingredients. Mix until combined.
-
Now mix in the chocolate chips, 1/2 C mini M&M’s, 1 C Oreos, and 1 C Golden Oreos.
-
Pour the cookie batter into the pan and use a rubber spatula to evenly spread the batter.
-
Sprinkle the remaining mini M&M, 1 C Oreos and 1 C Golden Oreos onto the top of the cookie bar batter.
-
Bake in your preheated oven for 35-40 minutes or until edges just begin to turn golden brown and a toothpick inserted in the center comes out clean.
-
Remove from oven slightly cooling before cutting and serving.

One Comment
ivy pluchinsky
My mom used to make something similar but with smarties