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M&M Cookie Bars Recipe

4.9 from 128 reviews

Delightfully colorful and chewy M&M Cookie Bars combine a classic cookie dough base with chocolate chips and vibrant M&Ms for a fun, crowd-pleasing treat. Baked to a golden perfection, these bars are perfect for sharing or enjoying as a sweet snack anytime.

Ingredients

Scale

Wet Ingredients

  • 1/2 cup softened butter
  • 1/2 cup brown sugar
  • 1/4 cup white sugar
  • 1 tsp vanilla extract
  • 1 egg

Dry Ingredients

  • 1 cup all-purpose flour
  • 1/3 tsp baking soda
  • 1/3 tsp salt

Add-ins

  • 1/2 cup chocolate chips
  • 1/2 cup M&Ms (divided, some reserved for topping)

Instructions

  1. Preheat Oven and Cream Butter and Sugars: Preheat your oven to 350°F (175°C). In a mixing bowl, combine the softened butter, brown sugar, and white sugar. Beat these ingredients together until you have a smooth and creamy mixture.
  2. Add Vanilla and Egg: Beat in the vanilla extract and egg thoroughly into the creamed butter and sugar mixture, ensuring everything is fully incorporated.
  3. Combine Dry Ingredients: In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add this dry mixture into the wet ingredients while beating, until just combined.
  4. Mix in Chocolate and M&Ms: Stir in the chocolate chips along with most of the M&Ms, reserving a small amount of M&Ms for decorating the top of the cookie bars.
  5. Spread Dough in Pan and Add Toppings: Evenly spread the cookie dough into an 8×6 inch or 9×7 inch baking pan. Sprinkle the reserved M&Ms on top for a colorful finish.
  6. Bake the Cookie Bars: Bake in the preheated oven for 18 to 20 minutes until the surface turns golden brown and the bars are set.
  7. Cool and Slice: Allow the cookie bars to cool completely in the pan before slicing into squares for serving.

Notes

  • Use room temperature butter to ensure the sugars cream together properly.
  • You can substitute M&Ms with any other colorful candy-coated chocolates if preferred.
  • For chewier bars, avoid overbaking; watch for that golden brown color on top.
  • Store leftover bars in an airtight container at room temperature for up to 4 days.

Keywords: M&M Cookie Bars, Chocolate Chip Bars, Easy Cookie Bars, Baked Cookie Bars, Candy Cookie Bars, Quick Dessert