Monster Cookie Bars

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  • Prep Time

    1 hr 5 mins

  • Cook Time

    5 mins

  • Additional Time

    1 hr

  • Total Time

    2 hrs 40 mins

  • Servings

    24 squares

  • Calories

    413 kcal

  • Course

    Dessert

  • Cuisine

    American

Monster Cookie Bars

Loaded with all the yummiest fillings, these soft & chocolatey Monster Cookie Bars are the ULTIMATE sweet treat for any celebration!

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Ingredients

Servings
  • 2 cups all-purpose flour
  • 1 ¼ teaspoons salt
  • ½ teaspoon baking soda
  • 1 ¾ cups rolled oats
  • 1 cup unsalted butter at room temperature
  • 1 cup creamy peanut butter
  • 2 cups light brown sugar not packed
  • 2 large eggs at room temperature
  • ½ tablespoon vanilla extract
  • 1 cup mini semi-sweet chocolate chips
  • 2 cups Mini M&Ms divided
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Instructions

  1. Line a 9-inch x 13-inch metal pan with parchment paper, making sure the paper hangs over the edges. Set aside.
  2. In a medium mixing bowl, whisk together the flour, salt, and baking soda. Stir in the rolled oats. Set aside.
  3. In a stand mixer bowl with the paddle attachment, beat together the butter, peanut butter, and brown sugar until light in color, about 3 minutes.
  4. Add in the eggs and vanilla and beat to combine. Scrape the sides of the bowl with a rubber spatula.
  5. Add the flour mixture to the wet ingredients in 3 additions, mixing until just combined after each addition. Stir in the mini chocolate chips and 1 3/4 cups of the mini M&Ms with a rubber spatula.
  6. Transfer the dough to the prepared pan and press it into an even layer. Sprinkle the remaining mini M&Ms on top and press them into the dough slightly.
  7. Refrigerate for 1 hour.
  8. Preheat your oven to 350 degrees F with an oven rack placed in the middle position.
  9. Bake for 33-35 minutes until the edges are golden brown, and a toothpick inserted in the center comes out lightly moist.
  10. Place the pan on a wire rack to cool to room temperature. Then use the parchment paper to lift the bars from the pan. Cut into 24 squares and enjoy!

Notes

  • Store leftovers in an airtight container in the pantry or on the countertop for up to 4 days. Or allow them to cool, then freeze in an airtight container for up to 3 months!

Nutrition Information

Show Details
Serving 1square Calories 413kcal (21%) Carbohydrates 49g (16%) Protein 6g (12%) Fat 22g (34%) Saturated Fat 11g (55%) Polyunsaturated Fat 2g Monounsaturated Fat 6g Trans Fat 0.4g Cholesterol 39mg (13%) Sodium 215mg (9%) Potassium 182mg (5%) Fiber 3g (12%) Sugar 34g (68%) Vitamin A 303IU (6%) Vitamin C 0.1mg (0%) Calcium 56mg (6%) Iron 2mg (11%)

Nutrition Facts

Serving: 24squares

Amount Per Serving

Calories 413 kcal

% Daily Value*

Serving 1square
Calories 413kcal 21%
Carbohydrates 49g 16%
Protein 6g 12%
Fat 22g 34%
Saturated Fat 11g 55%
Polyunsaturated Fat 2g 12%
Monounsaturated Fat 6g 30%
Trans Fat 0.4g 20%
Cholesterol 39mg 13%
Sodium 215mg 9%
Potassium 182mg 4%
Fiber 3g 12%
Sugar 34g 68%
Vitamin A 303IU 6%
Vitamin C 0.1mg 0%
Calcium 56mg 6%
Iron 2mg 11%

* Percent Daily Values are based on a 2,000 calorie diet.

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