Monster Cookie Bars

User Reviews

4.7

306 reviews
Excellent
  • Prep Time

    10 mins

  • Cook Time

    10 mins

  • Total Time

    40 mins

  • Servings

    24

  • Calories

    389 kcal

  • Course

    Dessert

  • Cuisine

    American

Monster Cookie Bars

Monster Cookie Bars- soft and chewy peanut butter oatmeal cookie bars with chocolate chips and colorful M&M's. All of your favorites in one pan!

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Ingredients

Servings
  • 2 cups all-purpose flour, spooned and leveled
  • 2 cups old fashioned oats
  • 1 teaspoon baking soda
  • 1 teaspoon sea salt
  • 1 cup unsalted butter, at room temperature
  • 1 cup creamy peanut butter
  • 1 1/2 cups packed light brown sugar
  • 1/2 cup granulated sugar
  • 2 large eggs
  • 1 tablespoon vanilla extract
  • 1 1/4 cups semi-sweet chocolate chips
  • 1 1/2 cups M&M’s, divided
  • Flaky sea salt, for sprinkling on bars

Instructions

  1. Preheat oven to 350 degrees F. Grease a 9x13-inch pan generously with nonstick cooking spray.
  2. In a large bowl, whisk together the flour, oats, baking soda, and salt. Set aside.
  3. In the bowl of a stand mixer, cream the butter, peanut butter, and sugars together until smooth, about 2 minutes, scraping down the side of the bowl with a spatula, if necessary. Add in the eggs and vanilla and mix until combined.
  4. Add the dry ingredients and mix until just combined, don’t over mix.
  5. Stir in the chocolate chips and 1 cup of M&M’s.
  6. Use a spatula to spread the mixture into the prepared pan. Top with the remaining 1/2 cup of M&M’s.
  7. Bake for 25-35 minutes or until bars are lightly golden brown and set. Don't over bake. You don't want the bars to be dry. Remove the pan from the oven and sprinkle with flaky sea salt. Let the bars cool in the pan. When cool, cut Into bars and serve.

Notes

  • If you want to make the dough in advance, you can chill the dough for up to 48 hours. Chilling will also soften the oats. 

Nutrition Information

Show Details
Calories 389kcal (19%) Carbohydrates 46g (15%) Protein 6g (12%) Fat 21g (32%) Saturated Fat 10g (50%) Polyunsaturated Fat 2g Monounsaturated Fat 6g Trans Fat 1g Cholesterol 36mg (12%) Sodium 212mg (9%) Potassium 185mg (5%) Fiber 3g (12%) Sugar 30g (60%) Vitamin A 290IU (6%) Vitamin C 1mg (1%) Calcium 46mg (5%) Iron 2mg (11%)

Nutrition Facts

Serving: 24Serving

Amount Per Serving

Calories 389 kcal

% Daily Value*

Calories 389kcal 19%
Carbohydrates 46g 15%
Protein 6g 12%
Fat 21g 32%
Saturated Fat 10g 50%
Polyunsaturated Fat 2g 12%
Monounsaturated Fat 6g 30%
Trans Fat 1g 50%
Cholesterol 36mg 12%
Sodium 212mg 9%
Potassium 185mg 4%
Fiber 3g 12%
Sugar 30g 60%
Vitamin A 290IU 6%
Vitamin C 1mg 1%
Calcium 46mg 5%
Iron 2mg 11%

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

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Overall Rating

4.7

306 reviews
Excellent

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