M&M Blondies

Buttery, rich and soft, and these M&M Blondies are so easy to make. Perfect for any time of year but especially great at Christmas time.

M&M Blondies stacked in a pyramid

Blondie vs Brownie

We have all heard of brownies. They are a very popular treat and dessert. But have you ever had a Blondie?

A blondie is like a brownie but without chocolate. Sometimes there are chocolate chips added. But blondies are essentially a brownie without cocoa powder or chocolate added to the batter.

There is also more vanilla in Blondies than in a brownie batter.

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Ingredients for M&M Blondies

There are a total of nine ingredients in this recipe.

  • Butter. Every good cookie bar recipe starts with butter. Margarine can be used in place of the butter but the cookie bars won’t be as rich.
  • Brown Sugar. This is actually a liquid ingredient and it is needed to add moisture to the bars as well as flavour.
  • White sugar. There is only a small amount of white sugar in this recipe but it is needed to add an extra layer of sweetness.
  • Eggs. Not only the glue that holds the batter together but eggs also add moisture and help build the texture of the bars.
  • Vanilla Extract. Enhances the flavour of the cookie bars.
  • Baking Soda.
  • All Purpose Flour.
  • M&Ms.
  • Chocolate Chips. These can be semi-sweet, dark chocolate or milk chocolate.

M&Ms In Place Of Some of The Chocolate Chips

The addition of M&Ms in these blondies changes the flavour. You can use regular M&Ms or minis. The choice is yours.

Around Christmas, there are special edition M&Ms which are the ones I like to use. Our favourite is the Mint M&Ms which are available around Christmas time only. I have also used the White Chocolate Peppermint M&Ms as well as a combination of the two. These flavours of M&Ms come in red, green and white which add that festive look to the blondies.

Great For Special Occasions

I love to make these and add them to Christmas baskets to give to all my friends. By using Christmas M&Ms, it adds Christmas colours to the blondies, making them more festive.

M&Ms also come in special occasion colours at different times of the year. Pink for Valentine’s Day. Pastel colours at Easter. With all the colours available, these M&M Blondies can be made for any occasion.

Share These M&M Blondies With Friends and Family

This recipe makes a larger batch than a usual blondie recipe. I created this recipe for sharing. It has also been a hit with bake sales for our sons’ football games as well as bake sales at school.

We also have a large family (10 children is considered a large family these days). So these don’t last long in our house.

This recipe will make 35 servings. (See how to store it below).

M&M Blondies cut into squares

Pan For Baking The Blondies

This recipe is baked on a cookie sheet. The best size is a 15″ x 10″ pan with raised edges like a jelly roll pan.

If you don’t have a pan that size, a 13″ x 9″ cake pan will also work. This will make a thicker blondie and the baking time will be longer. If using a cake pan, the baking time should be extended to 30-35 minutes.

Storing M&M Blondies

Storing these is easy. After cooling, cut into squares and store in an air-tight container for up to 5 days.

These blondies also freeze well if wrapped in parchment paper and placed in an air-tight container or freezer bag. In the freezer, these blondies will keep for up to three months. Thaw at room temperature.

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stacked M&M Blondies

M&M Blondies

5 from 2 votes
Prep Time 10 minutes
Cook Time 25 minutes
Cooling Time 15 minutes
Course Dessert
Servings 35 squares


  • Hand Mixer or Stand Mixer


  • cups butter, melted, cooled slightly
  • cups brown sugar
  • 3 Tbsp white sugar
  • 3 eggs
  • 1 tbsp vanilla
  • tsp baking soda
  • 4 cups all purpose flour
  • cups M&Ms, divided
  • ½ cup milk chocolate chips


  • Preheat oven to 325°F
  • Line a 15" x 10" cookie sheet with parchment paper, allowing parchment paper to hang over the sides about an inch on each side
  • Beat melted butter and sugars together, until smooth and creamy
  • Beat in eggs and vanilla
  • Add in baking soda
  • Using low speed, beat in flour, ½ cup at a time, until all flour is just incorporated
  • Fold in 1 cup of M&Ms and chocolate chips.
  • Spread batter evenly on cookie sheet.
  • Sprinkle remaining ¼ cup M&Ms over the top of the batter
  • Bake for 25 minutes or until edges are browned. Centre will still be soft
  • Allow to cool in the pan for 15 minutes
  • Remove from pan using parchment paper to help lift the blondies out
  • Cut into 35 squares and serve.
  • Store leftovers in an airtight container at room temperature.




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