Monster Cookie Bars
+5 photos

Monster Cookie Bars

24 servings
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!

Ingredients

  • all-purpose flour

    spooned and leveled

    2 c
  • old fashioned oats
    2 c
  • baking soda
    1 tsp
  • sea salt
    1 tsp
  • unsalted butter

    at room temperature

    1 c
  • creamy peanut butter
    1 c
  • packed light brown sugar
    1 ½ c
  • granulated sugar
    ½ c
  • eggs
    2 large
  • vanilla extract
    1 tbsp
  • semi-sweet chocolate chips
    1 ¼ c
  • m&m’s

    divided

    1 ½ c
  • flaky sea salt

    for sprinkling on bars

Directions

  1. 1

    Preheat oven to 350 degrees F. Grease a 9x13-inch pan generously with nonstick cooking spray.

  2. 2

    In a large bowl, whisk together the flour, oats, baking soda, and salt. Set aside.

  3. 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.

    Step 3
  4. 4

    Add the dry ingredients and mix until just combined, don’t over mix.

    Step 4
  5. 5

    Stir in the chocolate chips and 1 cup of M&M’s.

    Step 5
  6. 6

    Use a spatula to spread the mixture into the prepared pan. Top with the remaining 1/2 cup of M&M’s.

    Step 6
  7. 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.

    Step 7
Monster Cookie Bars
+5

Monster Cookie Bars

40 min24 servings389 cal

Ratings & Reviews

Be the First to Rate

Your rating helps others discover amazing recipes. Share your experience and let others know what you think!

About this Recipe

Craving the ultimate chewy treat packed with all your favorite flavors? These Monster Cookie Bars deliver soft, irresistible peanut butter oatmeal cookies loaded with chocolate chips and colorful M&M's, all baked in one easy pan for a crowd-pleasing dessert.

What makes these cookie bars so special is the perfect balance of creamy peanut butter, hearty old fashioned oats, and the delightful combination of M&M's and chocolate chips. This recipe brings together classic comfort flavors into a wonderfully soft and chewy texture that's easier to prepare and serve than individual cookies, making it a true winner for any occasion.

Prepare for a nostalgic flavor explosion with every bite. You'll taste the rich, comforting sweetness of light brown sugar balanced by the distinctive savory note of peanut butter, all complemented by pockets of melted chocolate and the cheerful pop of candy-coated M&M's. The texture is delightfully soft and perfectly chewy, a hearty bar that feels substantial yet melts in your mouth. Sprinkling flaky sea salt on top adds a sophisticated touch, enhancing the sweetness and depth of flavor.

Feel free to experiment with your favorite mix-ins; swap semi-sweet chocolate chips for milk chocolate or white chocolate, depending on your preference. You could also try different types of candies instead of M&M's, like chopped peanut butter cups for an extra peanut butter punch, or festive sprinkles for a holiday twist.

These decadent peanut butter oatmeal cookie bars are perfect for potlucks, bake sales, or simply as a comforting dessert to share with family and friends. They are fantastic served with a tall glass of cold milk.

Frequently Asked Questions