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Monster Cookies with M&Ms on top cooling on a copper rack.

Monster Cookies

These delicate, flavor-packed peanut butter chocolate chip cookies sprinkled with sea salt are an easy, oh so delicious treat you can whip up in just a few minutes. 
Course Dessert, Snack
Cuisine American
Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Servings 24 cookies
Calories 146kcal


  • 1 1/2 cups all-purpose flour 180g
  • 3/4 tsp baking soda
  • 1 cup old fashioned oats 90g
  • 1 cup smooth peanut butter  250g
  • 1 cup unsalted butter 226g, room temperature
  • 2/3 cup granulated sugar 135g
  • 3/4 cup packed light-brown sugar 200g
  • 1/2 tsp salt 3g
  • 2 tsp pure vanilla extract 10mL
  • 2 large eggs
  • 1 cup M&Ms or candy coated chocolate
  • 1/2 cup semisweet chocolate chips 75g


  • Sift the flour, salt, and baking soda into a medium bowl then add the oats, whisk together and set aside.
  • Cream the butter and peanut butter together then scrape the bowl down and beat in both sugars; beat on medium speed until light and fluffy.
  • Reduce speed to low; add the vanilla and eggs. Beat until well mixed, about 1 minute.
  • Add flour mixture; mix until just combined.
  • Stir in the M&Ms and chocolate chips. Cover and chill dough for at least 20 minutes to overnight.
  • Preheat oven to 350 degrees. Roll 2 tablespoon-size balls of dough in your clean hands and place about 2 inches apart on baking sheets lined with parchment paper. For a prettier cookie you can press a few chocolate chips and M&Ms on top of each cookie before baking.
  • Bake until cookies are golden around the edges, but still soft in the center, 10 to 15 minutes. The longer bake time will give you a crisper cookie.
  • Remove from oven, and let cool on baking sheet 1 to 2 minutes. Transfer to a wire rack, and let cool completely.



A generous sprinkle of sea salt on top makes takes these cookies to a whole new level. Use a large flake sea salt like Malden's if you can find it.
Use a thicker peanut butter for best results. If you have a natural brand with a separated layer of oil on top pour it off (saving it for later) and use the thicker part of the mixture. 
You can add bits of toasted peanuts to this recipe for extra crunch is desired. I recommend about 1/2-3/4 cup.


Serving: 35g | Calories: 146kcal | Carbohydrates: 21g | Protein: 2.2g | Fat: 6.7g | Saturated Fat: 3.4g | Cholesterol: 15mg | Sodium: 101mg | Potassium: 70mg | Fiber: 1g | Sugar: 14g | Vitamin A: 100IU | Calcium: 10mg | Iron: 0.7mg