Loaded M&M Oreo Cookie Holiday Bars

These 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 just over one year ago.

Loaded M&M Oreo Cookie Holiday Bars - Stuffed to the max with M&M's and Oreos!! Easy, no-mixer recipe that's ready in 30 minutes!! A guaranteed hit with everyone!!

I made the original recipe on a whim because I was moving and had a half package of both Oreos and M&Ms open, didn’t want to move them, didn’t want to toss them, made the bars, and the rest is history.

The 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.

MY OTHER RECIPES

Loaded M&M Oreo Cookie Holiday Bars - Stuffed to the max with M&M's and Oreos!! Easy, no-mixer recipe that's ready in 30 minutes!! A guaranteed hit with everyone!!

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&Ms or mint Oreos would be a great touch.

Loaded M&M Oreo Cookie Holiday Bars - Stuffed to the max with M&M's and Oreos!! Easy, no-mixer recipe that's ready in 30 minutes!! A guaranteed hit with everyone!!

The 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.

Loaded M&M Oreo Cookie Holiday Bars - Stuffed to the max with M&M's and Oreos!! Easy, no-mixer recipe that's ready in 30 minutes!! A guaranteed hit with everyone!!

Loaded M&M Oreo Cookie Holiday Bars

An easy, fuss-free, one-bowl, no-mixer recipe everyone will love and 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. Mint M&Ms or mint Oreos would be a great touch. The 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.

Ingredients:

  • 1/2 cup unsalted butter (1 stick), melted
  • 1 large egg
  • 1 cup light brown sugar, packed
  • 1 tablespoon vanilla extract
  • 1 cup all-purpose flour
  • 1/2 teaspoon salt, or to taste
  • 18 Oreo cookies, roughly chopped
  • 1/2 cup M&M’s (I used Dark Chocolate Red and Green M&M’s)

Directions:

  1. Preheat oven to 350F. Line an 8-by-8-inch baking pan with aluminum foil, spray with cooking spray; set aside.
  2. To a large, microwave-safe bowl add the butter and heat to melt, about 1 minute on high power.
  3. Wait momentarily before adding the egg so you don’t scramble it. Add the egg, brown sugar, vanilla, and whisk until smooth.
  4. Add the flour, salt, and stir until just combined, don’t overmix.
  5. Add the Oreos and stir to combine.
  6. Add the M&M’s and stir to combine.
  7. Turn the batter out into prepared pan, smoothing it lightly with a spatula and pushing it into the corners. Tip – Strategically place a few Oreos and M&M’s on top for visual appeal.
  8. Bake for about 18 to 21 minutes, or until top is set in center and done; don’t overbake. Bars firm up as they cool. A 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. Bars will keep airtight at room temperature for up to 1 week, or in the freezer for up to 6 months.

Adapted from Loaded M&M Oreo Cookie Bars

Only Eats

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52 comments on “Loaded M&M Oreo Cookie Holiday Bars”

  1. I made these over christmas and they were SO delicious!! everyone at work loved them!! all your recipes are so good :)

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