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Our M&M Cookie Bars are easy to make, pressing the dough into one 9×13-inch pan, then bake and cut into squares.
Thick and chewy M&M Cookie Bars
We took our classic M&M Cookies recipe and made it even easier–skip the scooping and cooking multiple batches and just spread the cookie dough in a pan and bake! I love to make these cookie bars for potlucks and parties because they are so easy to transport. They are still soft, chewy, and loaded with m&ms and mini chocolate chips. My favorite tip: Add parchment paper to the pan before the dough to make it effortless to lift the baked bars out and cut into perfect portions.
Try all of my bar recipes, like Butterscotch Blondies, Oatmeal Cookie Bars, Sugar Cookie Bars, S’mores Bars, and Snickerdoodle Bars.
How to Make M&M Cookie Bars
Make Cookie Dough: Preheat the oven to 350°F. Line a 9×13-inch baking pan with parchment paper and set aside. Combine the flour, baking powder, baking soda, and salt in a medium bowl and set aside. In a large mixing bowl or stand mixer, beat the butter, granulated sugar, and brown sugar well until creamed together. Add the eggs and vanilla and mix until combined.
Mix and Bake: Gradually mix in the flour mixture until combined. Stir in the mini chocolate chips and M&M candies. Press the dough into an even layer in the prepared pan. Bake for 22-35 minutes, until a toothpick inserted in the center comes out clean.
Cool and Serve: Let the bars cool completely, then pull up on the sides of the parchment paper to lift them from the pan. Cut into squares and enjoy!
M&M Cookie Bars
Equipment
- Stand Mixer optional
Ingredients
- 3 cups all-purpose flour
- 3/4 teaspoon baking powder
- 3/4 teaspoon baking soda
- 3/4 teaspoon salt
- 1 cup butter, room temperature
- 3/4 cup granulated sugar
- 1 cup light brown sugar
- 2 eggs
- 2 teaspoons vanilla extract
- 1 heaping cup M&M candies
- ½ cup mini chocolate chips
Instructions
- Preheat oven to 350 degrees F.
- Line a 9 x13 baking pan with parchment paper. Set aside.
- Combine flour, baking powder, baking soda and salt in a medium bowl; set aside.3 cups all-purpose flour, ¾ teaspoon baking powder, ¾ teaspoon baking soda, ¾ teaspoon salt
- Add butter, sugar and brown sugar to a large mixing bowl or stand mixer and beat well until creamed together. Add egg and vanilla and mix until combined.1 cup butter, ¾ cup granulated sugar, 1 cup light brown sugar, 2 eggs, 2 teaspoons vanilla extract
- Gradually mix in the flour and mix until combined. Stir in chocolate chips and m&m’s. Press dough into an even layer in prepared pan.1 heaping cup M&M candies, ½ cup mini chocolate chips
- Bake for 22-35 minutes or until a toothpick inserted in the center comes out clean.
- Remove from pan and let cool completely. Pull on side of parchment paper to remove bars from the pan and cut into squares.
Notes
- Add nuts: chopped walnuts or pecans
- Substitute the chips: feel free to add or substitute your favorite “chips”, like peanut butter or white chocolate chips.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
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I originally shared this recipe June 2017. Updated October 2020 and October 2026.
My family loves this recipe! Just one question, it says to remove from the pan twice. Once after baking and once after cooling. Which do you do? I tried to remove it after baking this time after about 10 minutes and they cracked so I’m guessing to let them cool fully in the pan?
These were so easy to make and the fact that you can make in advance and freeze is a win win. My grandsons love them. I just made another batch for my grandsons birthday.
I needed to store in frig overnite. Next morning, I thawed at rm temp for an hour. It was still tough to manipulate as i waited to fold in morsels and M& Ms. It baked nicely and tasted really good, fairly dense on finish.
I added 1/4 c. cocoa to the mix and some pearl sugar on top for extra crunch! These are the perfect consistency and yumminess. Thanks!
These are so delicious! My go-to blonde brownie recipe from now on!
They were delicious and quite a crowd pleaser. I would definitely recommend this recipe and will make them again!
Easy, easy recipe! I made these during the pandemic shut down and they went so fast. They are delicious! I am making them again for the 4th of July with red, white and blue M&Ms. can’t wait!
These look similar to a cookie recipe I use…so yummy! I’d like to double the recipe and bake in a large cookie sheet with sides…would you bake at same temp and maybe increase time to 20 minutes? Thanks!
I don’t think you need to do either. Just use same temperature and keep an eye on them if they may need a minute or two more but not sure they will.
Hello, sorry i am from Germany, we bake with gram or pound. Can you tell me please how much butter are 12 Tbsp in gram?
Thank you ?
Michi
I believe 12 Tablespoons of butter would be about 172.5 grams. Enjoy!
I made these to bring to a kids party and everyone raved! Thanks so much for sharing this recipe.
We tried them too, my kids stirred in some peanut butter and they were awesome!