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M & M Cookie Bars Soft chewy brown sugar M & M blondie cookie bars. The best M & M Cookie Bars recipe! www.modernhoney.com #bars #dessertbars #chocolatechipcookiebars

M & M Cookie Bars

Soft chewy brown sugar M & M blondie cookie bars. The best M & M Cookie Bars recipe!

If I had to choose my favorite candy of all-time, it would be hands-down M & M chocolate candies. I took my kids to the grocery store to get some essentials to make sure we were all prepared for whatever is coming next. As I walked down the aisles, I threw two bags of M & M’s into my cart. My son looked at me and said, “Really Mom…are these even essentials?” Does he NOT even know me at all? Of course, they are essentials. ๐Ÿ™‚ 

M & M Cookie Bars Soft chewy brown sugar M & M blondie cookie bars. The best M & M Cookie Bars recipe! www.modernhoney.com #bars #dessertbars #chocolatechipcookiebars

I am combining two of the best things in the world (in my opinion) — chocolate chip cookies and M & M’s. These M & M Chocolate Cookie Bars are heaven sent and will get you through the 3:00 pm cravings. These are soft and chewy, buttery and rich, and has the perfect balance of chocolate chips and M & M’s. 

M & M Cookie Bars Soft chewy brown sugar M & M blondie cookie bars. The best M & M Cookie Bars recipe! www.modernhoney.com #bars #dessertbars #chocolatechipcookiebars

I have been testing and re-testing this recipe for M & M Blondies to get them just right.  I wanted to get the crisp edges with chewy centers so a good amount of brown sugar and sugar are added to the recipe. To deepen the flavor, I melt 1/2 cup of butter in a saucepan until it begins to bubble and become a light golden color. This adds rich toffee notes to the cookie bar dough and also helps to dissolve the sugars. 

You are going to love these M & M blondie bars — guaranteed! The beauty of these M & M bars is that you can freeze them and take them out when you get a craving. You can place them in a large Ziploc freezer bag and they will stay fresh for weeks in the freezer. 

M & M Cookie Bars Soft chewy brown sugar M & M blondie cookie bars. The best M & M Cookie Bars recipe! www.modernhoney.com #bars #dessertbars #chocolatechipcookiebars

How to make the BEST M & M Blondies Cookie Bars:

  1.  Start by melting HALF of the butter in a saucepan. This will add toffee notes to the cookie dough and make it even better! The other half of the butter will be creamed together with the brown sugar and sugar. Once the butter is melted, it will be added to the sugar mixture and all mixed together. 
  2. Add one egg and one egg yolk and vanilla and mix for one minute longer
  3. Fold in flour, baking soda, salt, chocolate chips, and M & M’s. Line a 9 x 13 pan with parchment paper and press down on the sides. Add cookie dough to baking pan and spread to the edges. I love this aluminum USA baking pan
  4. Bake until the edges start to become a golden brown color. Remove from the oven and let the bars set up for at least 15 minutes before cutting. 

M & M Cookie Bars Soft chewy brown sugar M & M blondie cookie bars. The best M & M Cookie Bars recipe! www.modernhoney.com #bars #dessertbars #chocolatechipcookiebars

If you love desserts, check out these other recipes on Modern Honey:

CHOCOLATE CHIP COOKIE BARS
White Chocolate Chip Blondies

LEVAIN BAKERY CHOCOLATE CHIP COOKIES

 

M & M Cookie Bars Soft chewy brown sugar M & M blondie cookie bars. The best M & M Cookie Bars recipe! www.modernhoney.com #bars #dessertbars #chocolatechipcookiebars

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5 from 7 votes

M & M Cookie Bars

By: Modern Honey - www.modernhoney.com
M & M Cookie Bars Soft chewy brown sugar M & M blondie cookie bars. The best M & M Cookie Bars recipe!
Prep Time: 10 minutes
Cook Time: 22 minutes
Servings: 20

Ingredients  

  • 1 cup Butter (1/2 cup melted in saucepan, 1/2 cup mixed with sugars)
  • 1 cup Brown Sugar
  • 3/4 cup Sugar
  • 1 large Egg
  • 1 large Egg Yolk
  • 1 teaspoon Vanilla
  • 2 1/3 cups Flour
  • 1 teaspoon Baking Soda
  • 1 teaspoon Salt
  • 1 1/2 cups Chocolate Chips
  • 2 cups M & M's

Instructions 

  • Preheat oven to 350 degrees. Melt 1/2 cup of butter (1 stick) in a saucepan over medium-low heat. Let it completely melt and start to bubble. Remove from heat.
  • In a large mixing bowl, combine the remaining 1/2 cup of butter (1 stick), brown sugar, and sugar. Using a stand mixer or handheld mixer, mix for 2 minutes or until light and fluffy. Carefully add the melted butter and continue to mix for 3 minutes longer.
  • Add egg, egg yolk, and vanilla and mix for 1 minute.
  • Fold in flour, baking soda, and salt. Add chocolate chips and M & M's.
  • Place a piece of parchment paper in a 9 x 13 pan. Press around the sides. Spread cookie dough into baking pan. Bake for 22-25 minutes. Remove from the oven and let set up for at least 15 minutes before cutting into bars.

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

Course: Dessert
Cuisine: American
Servings: 20
Keyword: M & M cookie bars
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Hi, I'm Melissa Stadler!

I am an Award-Winning Recipe Creator. Cover of Food Network Magazine. Two-Time Pillsbury Bake-Off Finalist. I am passionate about sharing the best recipes so you have success in the kitchen!

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9 Comments

  1. Hello๐Ÿ–๐Ÿ˜Š, I tried this recipe with my son today and we had to sub eggs with chia seeds bcs I’m allergic to eggs. They took way longer to bake bcs of that. So I can honestly say these bars are for serious sweet-tooths๐Ÿ˜, they are very decadent with lots of chocolate. I’d go for less sugar somehow, and not at much butter… not sure how one would change to less butter.

  2. 5 stars
    Very good! Made with my 9 year old grandson. Used a bit less choc. chips than called for and a bit less white sugar. Cut beautifully! Wondering if I can freeze them.

  3. 5 stars
    I love the cookie bar idea! These cookies melt in your mouth and I am pretty sure I ate half the pan in one sitting!

  4. Delicious! But…a bit crumbly. Any suggestions to have them hold together a bit better? Less flour, more X, add Z?

  5. Is the cook time correct on these bars? I cooked them for 25 minutes let them rest for 15 and they were raw in side.

  6. 5 stars
    These turned out really yummy! We made a batch tonight to use as Easter basket treats. I substituted white chips for the chocolate because that’s what we had on hand. Thanks for a great recipe!