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Cookies and Cream Marshmallow Bars

Cookies and Cream Marshmallow Bars are the easiest no bake bars ever! These easy bars are even made in the microwave which makes them perfect for last minute sweet treats!

I partnered with my friends at Campfire® Marshmallows for my time in developing this recipe and post. Thank you for supporting the brands that make this website possible.

Cookies and Cream Marshmallow Bars Are An Easy No Bake Dessert

Isn’t it great when you can put together a sweet treat that looks OH so pretty, is CRAZY easy, and is one of your kids favorites in literal minutes? These Cookies and Cream Marshmallow Bars are one of my favorite simple desserts to make. They look so cute on a holiday baking tray, are perfect for gifting, or are an amazing party treat. Whenever I make these, people always rave about them, I almost feel guilty how easy they are!

This is the 5th day of my 12 Days of Christmas Cookies series and I am having so much fun! I hope you are loving the recipes that I have shared so far and have so many more fun ones to come! If you missed any of the first days of cookie recipes, I am recapping them at the bottom of this post!

No Bake Cookies and Cream Marshmallow Bars are a 3 ingredient dessert that is made in minutes!

Oreo Marshmallow Bars Are 3 Ingredients

Using marshmallows in my holiday baking has become a staple. Whether it’s using the mini marshmallows on a gingerbread house to decorate it, or using them in my favorite Rice Krispie Treat Recipe, they really do add fun to every occasion. In the past we have hosted cookie decorating parties around the holidays and the marshmallows are always the first decoration to be used! You can find more fun marshmallow ideas on Campfire® Marshmallows Instagram.

Campfire Marshmallows

How To Make / Instructions

  • Just place your marshmallows in a large microwave safe bowl, along with 1 tablespoon of butter. I used Campfire® Mini White Marshmallows in this recipe. They melt quickly and taste delicious!
  • Microwave the marshmallows in 30 second increments until they are puffed and smooth when stirred. Then stir in your chopped chocolate sandwich cookies.
  • Press the mixture into a greased pan and let them cool before cutting into pieces!
Chopped Oreo Cookies

How To Store

I get this question a lot with cookie and bar recipes…and unfortunately you cannot freeze these bars. The marshmallow will get very sticky when it thaws out and they just aren’t good. Luckily, though, this recipe can be made so quickly you won’t need to worry about making them ahead!

If you cut these Cookies and Cream Bars into pieces before they have cooled and set completely, they will be soft and a little gooey…which isn’t a bad thing! BUT if you wait until they set up completely, they will get firmer, but not hard, perfect for gifting and stacking!

This no bake “cookie” recipe is one you will be making for years! And I love the idea of making these with all different flavors or Oreo cookies to switch up the flavors!

Cookies and Cream Marshmallow Bars are an easy no bake dessert!
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Cookies and Cream Marshmallow Bars are an easy no bake dessert with only 3 ingredients!

Cookies and Cream Marshmallow Bars

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 3 reviews
  • Author: Shelly
  • Prep Time: 5 minutes
  • Cook Time: 0 minutes
  • Total Time: 5 minutes
  • Yield: 20 bars 1x
  • Category: Candy
  • Method: Microwave
  • Cuisine: Dessert


These easy no bake cookies and cream bars are simple and delicious!


  • 22 Chocolate Sandwich Cookies, coarsely chopped
  • 1 tablespoon butter
  • 1 (10- ounce) bag mini marshmallows


    1. Line a 9×9 baking dish with foil and coat with nonstick spray. Set aside.
    2. Place the marshmallows and butter in a large microwave safe bowl. Microwave on high in 30 second increments, stirring after each, until marshmallows and butter are melted and combined.
    3. Immediately stir in the chopped cookies until incorporated. Mixture will be thick.
    4. Press the mixture into the prepared pan. Allow the bars to cool completely, before cutting into bars. The longer they sit, the firmer they will be.


Store airtight at room temperature for up to 3 days.

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13 comments on “Cookies and Cream Marshmallow Bars”

    1. I am so sorry you are having trouble seeing the recipe. There is a recipe card at the bottom of the post that you can print out! You can access it by scrolling to the bottom or clicking the jump to recipe button. If you could try one more time that would be great!

  1. Somehow I cannot find how many marshmallows and how many cookies and the third ingredient. Pan size?

    1. The full recipe is at the bottom of the post in the recipe card! You can also use the “jump to recipe” button at the top of the post!

  2. can you please put all the calores in a easy spot i am doing this for a school projet and i need the carores

  3. This is a old recipe, posted in 2018 but i just want to say it was amazing!!! Not sickly sweet even with marshmallows and its just super nice, a little sticky but what can you do its melted marshmallows! I LOVED IT!

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