Easy and Chewy M&M Blondies

These M&M blondies are rich and chewy and are the perfect dessert for parties, game days and just about any other time you want something sweet. Change up the M&Ms with holiday colors and you have the perfect holiday treat. 

There are times when you just need a good blondie recipe. While I know there are plenty of blondie recipes out there I made these by accident. I was planning on making some brownies and didn’t realize I was out of all of my chocolate. I don’t know how that happened. The only thing I had was some leftover Christmas M&Ms and so I added those for chocolate. They came out a little soupy but tasted great and that is what started this recipe. 

In this recipe

There aren’t a lot of ingredients in this recipe however there are couple that you can change around. 

Brown sugar: this is going to enhance the flavor of the blondie by adding some caramel notes. If you want a darker blondie then use all brown sugar or use dark brown sugar. For a lighter blondie use all granulated sugar. 

M&M: These are a great way to add chocolate and color to the blondies. For different holidays use different colors. If you don’t like M&Ms you can substitute with chocolate chips, white chocolate chips, or butterscotch chips. 

Vanilla: can be substituted with bourbon or maple syrup especially if you are using butterscotch chips. 

Ingredients for M&M blondies on a wooden cutting board
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It's all about the butter

The first thing you want to do is make sure when you melt the butter that it doesn’t start to boil. You want the butter just melted. If the butter is too hot when you add the eggs in the butter could cook the eggs. Plus when you heat butter for too long it will start to separate. This is similar to why you want softened butter for cakes. It will help keep everything in a nice suspension while baking. This is a great recipe for a good European style butter as well. 

Mixing bowl with melted butter and sugar
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A mixing bown full of batter
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M&Ms sprinkled on top of blondie batter
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Making M&M blondies

Before adding the flour mixture you want to whisk the eggs, sugar, butter and vanilla well. Once you add the flour you want to mix the batter as little as possible. This will help keep the blondies from getting too tough and will allow them to rise as much as possible. Then once the flour has just been mixed in you will want to add about 1/2 cup of the M&Ms to the batter. The rest you want to sprinkle on tope so that you will be able to see them once the baking is done. 

A stack of blondies in front of a tipped over bowl of M&Ms
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Cooking and cooling

Since this batter is going to be thin but in a square baking dish these blondies are going to take anywhere from 40 to 60 minutes depending on your oven. Mine would take about 45 minutes to cook completely. Once they are out of the oven I know the temptation is going to be high to cut into them immediately. However for them to set up and hold their shape you will want to let them cool completely. Since these have a lot of liquid they will still quite soft once they are done. 

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Looking for other brownie recipes?

A stack of 3 M&M blondies
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Easy and Chewy M&M Blondies

Chewy blondies with M&Ms inside.
4.84 from 6 votes
Prep Time 10 minutes
Cook Time 45 minutes
Total Time 55 minutes
Course Dessert
Cuisine American
Servings 9 blondies
Calories 573 kcal


  • Whisk
  • Spatula or wooden spoon
  • Mixing Bowl
  • 9 x 9 inch baking dish


  • 2 cups flour
  • 1 cup brown sugar packed
  • 1 cup sugar
  • 1 cup butter unsalted, melted
  • 3 eggs
  • ¾ cups M&Ms
  • 1 tablespoon vanilla extract
  • 1 teaspoon baking powder
  • 1 teaspoon salt


  • Preheat the oven to 350°F, 177°C or gas mark 4. Grease a 9x9 inch baking dish.
  • Whisk the butter and sugars together. Then whisk in the eggs and vanilla.
  • Add to the bowl of an electric mixer along with the brown sugar, eggs and vanilla.
  • Using a spatula or wooden spoon gently fold in the flour, baking powder, and salt. Mix until everything has been just mixed in to prevent the batter from becoming over-mixed.
  • Gently fold in ½ cup of the M&Ms.
  • Pour the batter into the greased pan and then sprinkle the remaining M&Ms on top. Bake until golden brown or for 40-45 minutes or until a toothpick inserted in the middle comes out clean.
  • Allow the blondies to cool before cutting.


Serving: 1blondieCalories: 573kcalCarbohydrates: 80gProtein: 6gFat: 26gSaturated Fat: 16gPolyunsaturated Fat: 1gMonounsaturated Fat: 6gTrans Fat: 1gCholesterol: 111mgSodium: 230mgPotassium: 91mgFiber: 1gSugar: 57gVitamin A: 748IUVitamin C: 0.1mgCalcium: 85mgIron: 2mg
Nutrition Disclaimer*
Keyword Blondies, Chewy, Easter
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M&M blondies pinterest pin
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3 thoughts on “Easy and Chewy M&M Blondies”

  1. 5 stars
    Wow! Totally a perfect treat that everyone would love! It looks amazingly delicious! It will definitely be a big hit with our kids and kids at heart! Loving this already!

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