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Chewy Monster Cookie Bars Recipe Easy Homemade Candy Crunch Treats

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These chewy monster cookie bars combine a perfect balance of soft and slightly crisp edges with colorful candy crunch for a nostalgic, fun treat that’s easy to make and perfect for any occasion.

Ingredients

Scale
  • 1 cup (225g) unsalted butter, softened
  • 1 cup (200g) packed light brown sugar
  • 1/2 cup (100g) granulated sugar
  • 2 large eggs, room temperature
  • 1 teaspoon pure vanilla extract
  • 2 cups (240g) all-purpose flour (or almond flour for gluten-free)
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 3 cups (270g) old-fashioned rolled oats
  • 1 cup (250g) peanut butter (creamy or chunky)
  • 1 1/2 cups (270g) colorful candy-coated chocolate pieces (e.g., Hershey’s M&Ms)
  • 1/2 cup (90g) semi-sweet chocolate chips (optional)

Instructions

  1. Preheat your oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper, leaving an overhang on two sides.
  2. In a large bowl, beat together softened butter, packed light brown sugar, and granulated sugar until light and fluffy (3-4 minutes with mixer or 5-6 minutes by hand).
  3. Beat in eggs one at a time, then stir in vanilla extract until smooth and creamy.
  4. In a separate bowl, whisk together flour, baking soda, and salt.
  5. Gradually add dry ingredients to wet mixture, stirring gently until just combined.
  6. Stir in rolled oats and peanut butter until evenly distributed; batter will be thick and sticky.
  7. Gently fold in candy-coated chocolates and chocolate chips, reserving some candies to sprinkle on top.
  8. Spread batter evenly into prepared pan and press down lightly with a spatula. Sprinkle reserved candies on top.
  9. Bake for 25-28 minutes until edges are golden and center is set but still soft. A toothpick should come out with a few moist crumbs.
  10. Cool completely in pan on a wire rack. Use parchment overhang to lift out and slice into bars.

Notes

Use softened butter, not melted, for best texture. Fold in candies gently at the end to prevent melting or color bleeding. Watch baking time closely to keep bars chewy, not dry. For gluten-free, substitute flour and oats accordingly. For dairy-free, swap butter for coconut oil and use dairy-free chocolate chips.

Nutrition

Keywords: monster cookie bars, chewy cookie bars, candy crunch bars, peanut butter bars, easy dessert, colorful candy bars, homemade treats

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