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Monster Cookies


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5 from 21 reviews

  • Author: Jenna Barnard
  • Total Time: 35 minutes
  • Yield: 15 large cookies

Description

These monster cookies definitely live up to the name! They’re thick, soft, and loaded with M&M’s and chocolate chips. This recipe even includes a secret ingredient to enhance the flavor and texture. 


Ingredients

Monster Cookies

  • 1/2 cup (112g) unsalted butter, room temp (use European-style for the best flavor!)
  • 1/2 cup (125g) creamy peanut butter, like Jif or Skippy
  • 3/4 cup (150g) light brown sugar, packed
  • 1/4 cup (50g) granulated sugar
  • 1 tsp vanilla extract
  • 2 tsp molasses (for texture, not taste!)
  • 1 large egg 
  • 1 tsp baking soda
  • 1/2 tsp kosher salt
  • 1 1/4 cup (125g) quick oats (use certified gluten-free if needed)
  • 1 cup (130g) all-purpose flour or 1-to-1 gluten-free baking flour, spooned and leveled
  • 1 cup (185g) M&M’s 
  • 1 cup (185g) semisweet chocolate chips
  • Flaky sea salt, for topping (optional)

Instructions

Monster Cookies

  1. Preheat the oven to 350F and line a large baking sheet with parchment paper.
  2. In a large mixing bowl with a hand or stand mixer with the paddle attachment, mix together the butter, peanut butter, and sugars on medium-high speed for a minute until light and fluffy. Scrape down the bowl.
  3. Mix in the vanilla, molasses, and egg until smooth and creamy. Scrape down the bowl and mix in the baking soda, salt and oats until evenly combined.
  4. Toss in the flour and mix until the flour is about halfway incorporated. Remove from the mixer and fold in the M&M’s and chocolate chips using a rubber spatula.
  5. Using a large cookie scoop (2oz) scoop 5-6 cookies onto the baking sheet (press on a couple extra candies and chips if desired). Bake for 13-15 minutes or until lightly golden around the edges with a slightly underdone center.
  6. Immediately top with a sprinkle of sea salt, if using, and let the cookies rest on the baking sheet for a minute before transferring to a cooling rack.
  7. They’re the best when they’re still slightly warm so enjoy! Otherwise, cool completely and store in a container at room temperature. They’ll remain tasty for about 5 days. 

Notes

MIX-INS – Feel free to have fun here! You can use mini or regular M&M’s, dark chocolate chips, peanut butter chips, butterscotch chips, mini peanut butter cups, or whatever else sounds good. Just as long as it all equals 2 cups. 

SIZE – Since they’re MONSTER cookies, we’re making extra large cookies with a 2 ounce scoop. If you’d like a more regular-sized cookie, you can scoop to your size preference and reduce the bake time. I suggest starting with 10-12 minutes. 

  • Prep Time: 20 minutes
  • Cook Time: 15 minutes
  • Category: Cookies
  • Method: Baked
  • Cuisine: American
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