Loaded M&M Oreo Cookie Bars Recipe

Loaded M&M Oreo Cookie Bars are a dream come true for anyone with a sweet tooth. This dessert combines the creaminess of Oreos, the chocolatey crunch of M&Ms, and a soft, chewy cookie base into one irresistible treat. Here’s how you can make these delightful bars:


  • ½ cup unsalted butter, 1 stick, melted: Provides moisture and richness to the cookie dough.
  • 1 large egg: Binds the ingredients together.
  • 1 cup light brown sugar, packed: Adds sweetness and a moist texture.
  • 1 tablespoon vanilla extract: Enhances the overall flavor of the bars.
  • 1 cup all-purpose flour: The base of the cookie dough.
  • 18 Oreo Cookies, coarsely chopped: Adds a crunchy and creamy texture.
  • About 1/2 cup M&M’s: Adds color, texture, and chocolatey sweetness. Feel free to use your favorite flavor or other chopped candy.
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  1. Preheat Oven and Prep Pan:
    • Preheat your oven to 350°F (175°C). Line an 8×8 inch baking pan with parchment paper or aluminum foil, leaving an overhang on the sides to lift the bars out easily after baking. Grease the lining lightly.
  2. Mix Wet Ingredients:
    • In a large bowl, whisk together the melted butter, egg, light brown sugar, and vanilla extract until well combined.
  3. Add Dry Ingredients:
    • Gradually mix in the all-purpose flour to the wet ingredients until just combined, ensuring not to overmix.
  4. Incorporate Oreos and M&M’s:
    • Fold in the coarsely chopped Oreo cookies into the batter, reserving some for topping. Do the same with the M&M’s, keeping some aside for the top.
  5. Assemble and Bake:
    • Pour the batter into the prepared baking pan, using a spatula to spread it evenly. Sprinkle the reserved Oreo pieces and M&M’s over the top for a colorful and textured finish.
    • Bake in the preheated oven for about 20-25 minutes, or until the edges begin to pull away slightly from the sides of the pan and the center is set.
  6. Cool and Serve:
    • Allow the cookie bars to cool completely in the pan set on a wire rack. Once cool, use the overhangs to lift the bars out of the pan, then cut into squares.
    • Serve and enjoy! These bars are best enjoyed the day they are made but can be stored in an airtight container at room temperature for up to 3 days.


  • Customization: Feel free to add nuts or other types of candy for additional textures and flavors.
  • Cutting Bars: For cleaner cuts, use a sharp knife and wipe it clean between cuts.
  • Serving Suggestion: These cookie bars are rich and sweet on their own, but for an extra indulgent treat, serve with a scoop of vanilla ice cream.

Loaded M&M Oreo Cookie Bars are the perfect treat for parties, movie nights, or whenever you’re in the mood for something decadently sweet and satisfying. Enjoy baking and indulging in these delightful bars!