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Peanut Butter M&M Bars

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This recipe for Peanut Butter M&M Bars is one that I’ve had in my recipe box for years. It’s truly a crowd-pleasing dessert and one that any peanut butter lover will enjoy. Change the color of colored candies and they are perfect for any occasion. 

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Peanut Butter M&M Bars

This dessert is excellent for any holiday, sporting event (think team colors), bridal or baby shower (think pink and/or blue), or any party in general.

For Valentine’s Day, I made Peanut Butter M&M Bars with Valentine’s Day M&M’s, candy heart sprinkles, and chopped peanut butter cups.

Simply use different seasonal colors of M&M’s, such as pastel-colored candies for Easter, red and green candies for Christmas, or red, pink and white candies for Valentine’s Day. Yellow, orange and chocolate M&M’s work well for Halloween and green candies are perfect for St. Patrick’s Day.

Peanut Butter and M&M Bars


One recipe yields a jelly roll pan measuring 10.5-inches x 15.5-inches. When serving the bars to guests, I slightly trim the edges and cut my bars into approximately 2.5″ x 3″ OR 3″ x 3″ squares (give or take). These serving sizes will yield approximately 20 to 24 servings. (Oh, and FYI… my family fights over the cutoff edges!!)

Peanut Butter and M&M BarsNo one on a restricted gluten-free diet need go without because Peanut Butter M&M Bars can easily be made gluten-free. Just one more reason why this recipe is so adaptable and perfect for any occasion.

Peanut Butter M&M Bars

Peanut Butter M&M Bars freeze well in an airtight food storage container up to two weeks. Therefore, feel free to make an entire batch, eat half, then freeze the other half to serve later. Slightly warm the bars prior to serving.

Peanut Butter and M&M Bars



189 cal


11 g


20 g


4 g
Click Here For Full Nutrition, Exchanges, and My Plate Info

Serves Approx. 20 - 24 Bars

Peanut Butter M&M Bars

An easy and Gluten-Free adaptable recipe that everyone will love. Using different colors of seasonal candies make these peanutty bars ideal for any holiday, party or event.

15 minPrep Time

25 minCook Time

40 minTotal Time

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  • 1 cup peanut butter, either creamy or chunky will work
  • 3/4 cup butter, softened
  • 1 1/2 cup brown sugar
  • 2 eggs
  • 1 teaspoons vanilla
  • 1 1/3 cup all purpose flour (GF Option: gluten-free flour + 1 teaspoon xantham gum OR 2 tablespoons potato starch - unless flour already contains a thickening agent)
  • 1 cup oats, uncooked (GF Option: use certified gluten-free oats)
  • 1 teaspoon baking soda (GF Option: use a gluten-free brand)
  • 1/4 teaspoon salt
  • 1 cup M&M candies (GF Option: Most plain M&M candies are gluten-free, however not all of their candies are. Be sure to use certified gluten-free chocolate candies for a GF Option.)


  1. Beat together peanut butter, butter and brown sugar until light and fluffy.
  2. Mix in eggs and vanilla.
  3. Add flour, oats, baking soda and salt; mix well.
  4. Gently stir in 1/2 cup M&M's.
  5. Press dough into bottom of a lightly greased 10.5-inch x 15.5-inch jelly roll pan.
  6. Sprinkle remaining M&M's over top and lightly press them into the dough.
  7. Bake in a preheated 350 degree F. oven for 20 - 25 minutes.
  8. Cool; cut into squares.
  9. Optional: Serve with a scoop of chocolate or vanilla bean ice cream.


Bars freeze well up to 2 weeks in an airtight food storage container.

Peanut Butter and M&M Bars

Yes, ma’am! If you ever try Peanut Butter M&M Bars, I think you’ll agree with me that the original creator of this recipe needs a big ole’ hug and kiss! XOXO

What are your favorite M&M candies?

Click for > M&M Allergen Info

Don’t forget to Pin it!

More great ideas:

gluten free appetizer

Thanks for sharing!

{ 6 comments… add one }
  • Marie March 21, 2019, 7:26 am
    Does the type of oat matter in the recipe? Quick or old fashioned?
    • Blessed Beyond Crazy March 21, 2019, 9:03 am
      Hi Marie, I would suggest using the quick because they will incorporate better into the batter. However, you certainly can use old fashioned oat. The old fashioned oats will probably be a little more noticeable and the bars may be just a little chewier but, I certainly do not have a problem with any of that. They will taste the exact same. Thanks for stopping by and I hope you enjoy this recipe! Have a great day! Linda

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