Loaded Christmas Bar Cookies
These M&M’s cookie bars are famous. Well, maybe not these exact bars but the original recipe is. The original recipe has been Pinned over 1 million times and appeared on the cover of Taste of Home Magazine in 2014. I made the original recipe on a whim because I was moving and had a half package of both Oreos and M&M’s open, didn’t want to move them, didn’t want to toss them, made the bars, and the rest is history. This cookie bars recipe is a spinoff on my trusty blondie base. When I want an easy, fuss-free, one-bowl, no-mixer recipe that I know everyone will love, it’s my go-to. With 30+ versions and counting, it never lets me down. It’s an easy recipe to memorize because everything is ‘one’. In the 1 bowl used, melt 1 stick of butter, stir in 1 egg, 1 cup of brown sugar, 1 tablespoon vanilla, 1 cup flour. For this version, there’s Oreos and M&M’s added. I was on the hunt for red or green-filled seasonal Oreos but was just a bit too early when I made the bars a few weeks back. I think mint M&M’s or mint Oreos would be a great touch here as well. These M&M’s cookie bars are loaded with goodies in every bite. Crunchy Oreos and crisp M&M’s are a great texture contrast to the soft, buttery bars.
What’s in M&M’s Cookie Bars?
To make these easy cookie bars, you’ll need:
Unsalted butter Egg Brown sugar Vanilla extract All-purpose flour Salt Oreo cookies M&M’s
How to Make M&M’s Cookie Bars
Melt the butter, then stir in the egg, vanilla, and brown sugar. Stir in the dry ingredients, then gently fold in the M&M’s and chopped Oreos. Turn the batter into a greased 8×8-inch baking dish and bake until the top is set in the center and done. The toothpick test is a bit tricky because there aren’t many bare batches, but if you hit a patch of just dough, the toothpick should come out clean, or with a few moist crumbs, but no batter. Place pan on a wire rack to cool for at least 90 minutes before slicing and serving.
Want to see how to make cookie bars? Watch the video!
Can I Add Other Mix-Ins?
Of course! You can add other chopped holiday candies and chocolates to these M&M’s cookie bars.
Can I Double This Recipe?
Yes, simply double the ingredients and bake these cookie bars in a 9×13-inch pan.
Tips for Making M&M’s Cookie Bars
You just need to roughly chop the Oreos for these M&M’s cookie bars. You want them to be big enough to bite into, but not so big that you’re trying to chew half an Oreo at once. I made this recipe as Christmas bar cookies, but you can make these bars for any holiday. Just switch out the holiday M&M’s for whatever color you’d like. You can even add seasonal Oreos to the mix, if desired. These M&M’s cookie bars can be kept on your counter for a few days, or you can pop them into a freezer bag and freeze them for later. They’re a great treat to have stashed in the freezer for last-minute guests this time of year!
More Cookie Bars:
Holiday Sugar Cookie Bars with Cream Cheese Frosting — The bars are buttery soft in the middle with a bit of chewiness around the edges and have nice texture from the baked-in sprinkles. Tried this recipe? Leave a review! Consider leaving a 5 star rating if you’ve made and loved one of my recipes!
Loaded M&M Oreo Cookie Bars — Stuffed to the max with M&Ms and Oreos! Easy, no-mixer recipe that’s ready in 30 minutes. Always a hit at parties!
Snickerdoodle Bars with Cream Cheese Frosting — Snickerdoodle bars are so much FASTER AND EASIER than making snickerdoodle cookies!! The sprinkles and tangy cream cheese frosting will put everyone in the holiday spirit!!
M&M’S Chocolate Chip Cookie Bars — Soft buttery bars loaded with M&M’S and chocolate chips are a guaranteed hit! Fast, easy, foolproof, no mixer recipe that’s so much simpler than making cookies!
Triple Peanut Butter Monster Cookie Bars – Peanut butter is use 3 different ways! Peanut butter lovers will go nuts for these!
Banana Oatmeal Chocolate Chip Cookie Bars — A FAST and EASY dessert that is on the HEALTHIER side with only 1/4 cup butter and no oil!! Bold banana flavor, chewiness from the oats, and plenty of chocolate in every bite!!
Peanut Butter Chocolate Chip Bars — These peanut butter chocolate bars are loaded with chocolate chips and creamy peanut butter. This is a one-bowl dessert you’re bound to love!
