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M&M Blondies

These M&M Blondies are fabulously buttery and chewy and have a festive look from a generous amount of mini M&M’s. You could probably even find red and green seasonal M&M’s and really make them look Christmasy.

M&M Blondies
These M&M Blondies are fabulously buttery and chewy and have a festive look from a generous amount of mini M&M’s.

I know it’s just after Thanksgiving and you’re probably stuffed with pumpkin pie and pecan pie and hardly in the mood to think about sweets.

M&M Blondies

But I’m ready to dive right into that holiday baking season.

M&M Blondies

Everyone thinks of cookies when it comes to holiday baking, but I really like my bars. Both brownies and blondies. They are so easy to make and they tend to keep well too. The only downside is waiting for them to cool before slicing them.

M&M Blondies

This M&M Blondie recipe is adapted from America’s Test Kitchen and I find their recipes pretty much always work and they can be a good base for trying something a little different.

I love how pretty M&M’s make these blondies look, but you could certainly use chocolate chips instead.

Those bright colors! Don’t they just cheer you up? Especially on a dreary late autumn day.

I think you’ll find these M&M Blondies are both soft and chewy with just the right amount of sweetness.

How Do I Know When My Blondies Are Done?

Use the toothpick test to determine if your blondies are done. Insert a toothpick in the center and if it comes out with just a few moist crumbs attaches, it is done. Be sure not to overbake them because they will be dry.

Measure The Flour Correctly

When baking it is so important to measure the flour correctly, otherwise you risk adding too much flour which will result in a dry product. Start by fluffing the flour up some in the bag or container. Then gently scoop it using a large spoon into a dry measuring cup. Overfill it slightly and then run the back of a knife across the top to get rid of the excess.

How To Store M&M Blondies

Can be stored at room temperature in an airtight conatiner for 5 days or they can be frozen for up to 3 months.

M&M Blondies

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More Blondie Recipes

M&M Blondies

M&M Blondies

These M&M Blondies are fabulously buttery and chewy and have a festive look from a generous amount of mini M&M's. Taste great as is but also make an awesome base for an ice cream sundae!
PREP: 10 minutes
COOK: 22 minutes
TOTAL: 32 minutes
SERVINGS: 15 servings


  • 1 1/2 cups all-purpose flour
  • 1 teaspoon baking powder
  • 1/2 teaspoon salt
  • 1 1/2 cups packed light brown sugar
  • 12 tablespoons butter, melted and cooled
  • 2 large eggs
  • 2 teaspoons vanilla extract
  • 3/4 cup mini M&Ms, plus extra for sprinkling on top


  • Preheat oven to 350 degrees. Line a 9×13-inch pan with aluminum foil and spray it with baking spray (or use butter to grease it).
  • In a medium bowl, whisk flour, baking powder, and salt together.
  • In a large bowl, whisk sugar and melted butter together and then whisk in eggs and vanilla.
  • Use a wooden spoon or rubber spatula to stir the flour mixture in until just combined.
  • Stir in M&Ms.
  • Pour batter into prepared pan and use a spatula to spread it evenly. Sprinkle a few more mini M&Ms on top and lightly press them into batter.
  • Bake for 22 to 25 minutes. Let blondies cool completely before slicing.


Can be stored at room temperature in an airtight container for 5 days.
Nutritional info is provided as an estimate only and will vary based on brands of products used.


Calories: 272kcal | Carbohydrates: 38g | Protein: 3g | Fat: 12g | Saturated Fat: 7g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 0.4g | Cholesterol: 47mg | Sodium: 200mg | Potassium: 54mg | Fiber: 1g | Sugar: 28g | Vitamin A: 335IU | Vitamin C: 0.1mg | Calcium: 54mg | Iron: 1mg
Author: Christin Mahrlig
Course: Dessert
Cuisine: American
Keyword: blondies, candy

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10 thoughts on “M&M Blondies”

  1. My blondies did not turn out like the picture at all. It’s probably my fault but I can’t figure out what I did wrong.

  2. I love bars more than cookies for their ease too and think these are the perfect treat to kick off the holiday baking season! They look amazing the pop of color from the M&M’s is so so pretty! Hope you and your family had a wonderful wonderful Thanksgiving 🙂

  3. Mary // Chattavore

    Oh, yum, Christin! M&M cookies are one of my favorites…somehow they’re just better than plain old chocolate chips…and in bar form? Yes!

  4. Thao @ In Good Flavor

    Soft and chewy with a just the right amount of sweetness is a dessert I would like to my teeth into. These blondies look SO GOOD!! …And so festive and fun too!

  5. Medha @ Whisk & Shout

    I’m more of a fan of bars in general, too! They’re just less work but with all the flavor 🙂

  6. Yes to holiday baking! These look so fun and perfect for munching while trimming the tree. : ) Hope you had a happy Thanksgiving!

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