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No-Bake Monster Cookie Bars

No-Bake Monster Cookie Bars – Chewy, Cozy & Irresistible

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  • Author: Ellie
  • Prep Time: 10 minutes
  • Cook Time: 5 minutes
  • Total Time: 1 hour 15 minutes
  • Yield: 16 bars
  • Category: Dessert
  • Method: No-Bake
  • Cuisine: American
  • Diet: Vegetarian

Description

These No-Bake Monster Cookie Bars are packed with oats, peanut butter, M&M’s, and chocolate chips—everything you love in a monster cookie, but easier. No oven needed, just mix, press, and chill for the ultimate nostalgic treat.


Ingredients

1/2 cup unsalted butter

1 cup creamy peanut butter

1/2 cup light brown sugar

1/4 cup honey or corn syrup

2 teaspoons vanilla extract

3 cups quick oats

1/2 cup mini M&M’s

1/2 cup mini chocolate chips


Instructions

1. Line an 8×8-inch or 9×9-inch pan with parchment paper.

2. In a saucepan over medium heat, combine butter, peanut butter, brown sugar, and honey. Stir until melted and smooth.

3. Remove from heat and stir in vanilla extract.

4. Add oats and stir until fully combined. Let mixture cool for 5 minutes.

5. Stir in most of the M&M’s and chocolate chips, saving a few to sprinkle on top.

6. Press mixture evenly into the prepared pan.

7. Sprinkle remaining M&M’s and chocolate chips on top, pressing them in slightly.

8. Refrigerate for at least 1 hour, or until set. Cut into bars and enjoy!


Notes

Use quick oats for best texture—old-fashioned oats will be chewier.

Swap M&M’s with peanut butter chips, pretzels, or chopped peanuts.

Store bars in an airtight container in the fridge for up to 1 week.