Christmas M&M cookie bars


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I’m excited to share these delicious M&M cookie bars with you today! They are perfect for a cookie exchange or holiday party. Cookie bars have to be one of my favorites. I’ve made so many different versions and this one is delicious! I think I finally have perfected it… just in time for the holidays. ;)  Enjoy!



Christmas M&M cookie bars


  • 2 cups all-purpose flour
  • 1/2 tsp baking soda
  • 1/2 tsp baking powder
  • 1 1/2 cubes of butter (12 TB) softened
  • 1 cup sugar
  • 1/2 cup brown sugar (packed)
  • 2 eggs
  • 1 tsp vanilla
  • 11 oz bag mini baking M&M’s (save a few to go on top)


1. Combine flour, baking soda and baking powder in a medium sized bowl and set aside.
2. Mix together in a large bowl: sugar, brown sugar, butter, eggs and vanilla. Mix for about 1 minute, or until fluffy. Then slowly add the flour mixture to the wet ingredients.
3. Fold in m&m's and then place dough in a 13x9 baking sheet lined with foil. Then place a few M&M's on top.
4. Bake at 325 for 20-35 minutes (depending on oven), or until a toothpick comes clean.
(Optional) For glaze: Combine 1 cup powdered sugar + 1 TB milk and drizzle over cookies once cooled.



For more Christmas ideas make sure to check  out this post HERE. I hope you all have a Happy Holidays!

Also don’t miss:

20 best Christmas cookies

Homeade chocolate peppermint oreos

Chocolate candy cane kiss cookies


more by Jamielyn »

Jamielyn Nye

Creative director and founder of I Heart Naptime. Jamielyn aspires to reach women, get their creative juices flowing, and to genuinely inspire. When she’s not creating, Jamielyn loves to chase her three little monkeys and snuggle up on the couch with her man.

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  1. Michal posted on November 27, 2012 at 4:03 pm (#

    *gasp!* These look DIVINE. I do love a good Christmas cookie :)

  2. Paola Bacci posted on November 28, 2012 at 7:00 am (#

    Una deliziosa ricetta e un bellissimo blog!!! Complimenti, ciao!!!

  3. Jane posted on November 28, 2012 at 8:37 am (#

    The only problem with these is that if I bake them while my boyfriend is there, he will eat them all and not give me a chance to try them haha. These look sooo yummy!

  4. noire posted on November 28, 2012 at 9:33 am (#

    This looks so yummy! Thanks for sharing the recipe. I like how you decorated them as well, very ‘Christmasy’ LOL xx

  5. Loretta | A Finn In The Kitchen posted on November 28, 2012 at 9:39 am (#

    OOhhhh, I love this! It’s the perfect thing to bring to all those holiday parties coming up! I love that there’s just a hint of glaze…

  6. Amy @MoMomma posted on November 28, 2012 at 1:20 pm (#

    These look amazing! Please come link up at MoMomma Monday!! Runs all week and starts every Monday!

  7. Ambar posted on November 28, 2012 at 3:22 pm (#

    THIS looks sooooo good! cant wait to try it!

  8. Dorothy @ Crazy for Crust posted on November 28, 2012 at 8:31 pm (#

    These are super pretty, and well. M&Ms can’t ever be wrong!

  9. Shelly B posted on November 30, 2012 at 10:49 am (#

    I just wanted to leave a little note letting you know that I made these last weekend and they were wonderful! I used a smaller baking dish so my bars turned out about 3 times as thick as the ones in your picture (also lead to a cook time of nearly 40 minutes.) SO SO YUMMY! Thank you.

  10. Mitch posted on December 5, 2012 at 3:06 pm (#

    tried these today but it had a very bad aftertaste… unfortunate since they looked so good! Not sure if i did something wrong because I thought I followed the instructions perfectly… I used yellow sugar instead of brown. Could that have been it?

    • Jamielyn posted on December 24, 2012 at 1:07 pm (#

      Yes, try brown sugar next time… it gives them the perfect flavor.

  11. Marcie posted on December 6, 2012 at 12:31 pm (#

    I normally love your recipes – your green chile enchiladas are a family favorite, and your orange dream cupcakes are delicious! But I had problems with this recipe, even though I followed the instructions exactly. At 20 minutes of baking time, the inside of the pan was still soupy. I had to bake them another 15 minutes before the toothpick came out clean, and at that point they had browned so much that they weren’t as pretty as yours. They still taste good, but I was disappointed in the appearance since I made them for a bake sale. Normally my oven bakes okay, so I don’t know what the problem was. Just wanted to give others a heads up that they may need to plan for a little extra baking time!

    • Jamielyn posted on December 24, 2012 at 1:09 pm (#

      Oh no! Did you line your pan with foil? That seems to really help evenly cook them. Also make sure your oven is all the way heated before sticking them in. Merry Christmas!

  12. Summer posted on December 7, 2012 at 7:25 pm (#

    I just made these about an hour ago. I too had to leave them in the oven for an additional 10 minutes. Overall they were delicious!

  13. Natalie C posted on December 10, 2012 at 4:10 pm (#

    Hi! I made these…but, mine were THICK. I used a 9×13 baking pan. Yours look thin. Which is one of the reasons, I tried this recipe. But, maybe next time I’ll use a bigger dish…b/c I would like them thin like your picture!

    • Natalie C posted on December 10, 2012 at 4:12 pm (#

      Also, my baking time ended up being about 15 minutes longer b/c they were so thick! I’ll try a larger pan next time and see! :)

  14. Amy Murphy posted on December 16, 2012 at 11:46 am (#

    making the m&m cookie bars as we speak! smell yummy!

    • Jamielyn posted on December 17, 2012 at 10:49 am (#

      Yumm!! How did they turn out? I hope you have a happy holidays! xo

  15. Kelsey posted on December 17, 2012 at 7:49 am (#

    Can you freeze these like you would cookies? Would they still be the same after defrosting?

    • Jamielyn posted on December 17, 2012 at 10:46 am (#

      Yes, these ones freeze up nicely. :)

  16. Lisa K posted on December 19, 2012 at 6:45 am (#

    YUM! I made these last night for a cookie exchange and I think they’re delicious! They’re sure to be a crowd pleaser!

  17. Amy posted on December 22, 2012 at 7:09 pm (#

    Cooking time way longer than 20 minutes. I used same size pan, and cookies were thicker…still yummy

  18. Kelly posted on December 23, 2012 at 1:45 pm (#

    Hi is this 1 and 1/2 cups butter or one 1/2 cups butter ?

    • Jamielyn posted on December 24, 2012 at 1:11 pm (#

      Hi Kelly! 1 1/2 cubes!

      • Eileen posted on November 26, 2013 at 6:01 pm (#

        I’m confused about the amount of butter to use. You listed it as 1 and 1/2 cups butter but you also said 12 TB which is only 3/4 cup butter. If you are suggesting 1 and 1/2 cups of butter, then you mean 24 TB. Please advise. Thanks!

      • Lindsay posted on December 7, 2013 at 2:51 am (#

        Now I’m confused about the butter. How much? 1.5 cups? 0.5? Something else? Also, about how many bars does this make? I need about 4 dozen so I want to know how much to increase the recipe. Thanks!

      • Jamielyn posted on December 11, 2013 at 11:42 am (#

        It is 1.5 cubes of butter or 12 TB of butter! Sorry for the confusion! :) They are made in a 13×9 baking sheet, so it depends how big you cut them! I usually get about 20 from this sheet!

      • Jamielyn posted on December 11, 2013 at 11:52 am (#

        Hi Eileen! Sorry about the confusion, it is 1.5 cubes of butter or 12 TB! Hope that helps! :)

  19. Samantha posted on November 15, 2013 at 8:09 am (#

    Would these freeze well? I am looking for a cookie recipe for a cookie exchange for work but they need to be freezable as we are exchanging a lot and a few weeks before christmas.

    • Jamielyn posted on November 26, 2013 at 12:45 pm (#

      Yes, I think this recipe will freeze well! :) They would be yummy for a cookie exchange!

  20. Dana mosher posted on November 16, 2013 at 3:53 pm (#

    Can’t wait to try these and several other recipes. Thx!

    • Jamielyn posted on November 17, 2013 at 3:40 pm (#

      I love these christmas cookie bars, they are one of my favorites! I hope you enjoy them Dana! :)

  21. peggy posted on December 4, 2013 at 9:14 pm (#

    Is it 1 and one half sticks of butter which = 12 TB?

    • Jamielyn posted on December 11, 2013 at 12:26 pm (#

      Yes it is Peggy! :)

  22. Emalee posted on December 11, 2013 at 11:43 am (#

    How many bars will this recipe make? I need 84 cookies for a cookie exchange. I’m trying to figure out how much of each ingredient i will need. Thanks!

    • Jamielyn posted on December 11, 2013 at 12:04 pm (#

      Hi Emalee! It depends on how big you cut them! Since they are cooked in a 13×9 baking sheet, you will get 20-35! Hope that helps! :)

      • Andrea posted on December 12, 2013 at 8:32 pm (#

        Hi, do you use dark brown sugar or light? They look delicious!!!

      • Jamielyn posted on December 16, 2013 at 5:54 pm (#

        I always use light! :)

  23. Nicole posted on December 20, 2013 at 9:40 am (#

    I am making these today for Sunday, how should I store them and will they still taste good two days later???

    • Jamielyn posted on December 23, 2013 at 12:20 pm (#

      Yes, they will stay good for two days in an airtight container!

  24. lashawn posted on December 24, 2013 at 11:32 am (#

    what is TB? Im not a baker so I don’t know what that means.

    • Jamielyn posted on December 24, 2013 at 11:46 am (#

      TB=Tablespoon! :)

      • lashawn posted on December 24, 2013 at 11:57 am (#

        LOL I thought so but didn’t seem like enough milk but okay! Im going to make these tomorrow with my nephew. He likes to bake

  25. hannah posted on November 19, 2015 at 9:12 am (#

    Hi! how long do these keep? :) 

    • Laura Capello posted on November 19, 2015 at 5:17 pm (#

      At room temperature, a few days. In the refrigerator, maybe a week or so? But I cannot imagine having any worries – they always are eaten quite quickly around here. ;)

      If you’re making them for an event, I’d make them a day ahead and leave them at room temperature. I’d leave some airspace and either cover them with a clean dishtowel or set the lid on, but not air tight (which can make them reabsorb the moisture of the icing and then the texture can get a little weird – or maybe that’s just my house?). :)

  26. -- posted on December 10, 2016 at 10:15 pm (#

    TB=tablespoon, correct?

    and is it 325 Fahrenheit or Celsius ?

    • I Heart Naptime posted on December 11, 2016 at 9:39 am (#

      Tablespoon, correct! And 325 Fahrenheit, which equates to 165 Celsius. :)