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Dark Chocolate Monster Cookies

These decadent dark chocolate monster cookies are full of chocolate peanut butter, oats, chocolate chips, and M&M’s. They’re easy to make and bake up extra soft with LOTS of gooey chocolate!

Dark Chocolate Monster Cookies |

If you know me, you know these cookies are right up my alley! They’re extra soft, and LOADED with chocolate, peanut butter, oats and M&Ms. All of my faves crammed into one amazing cookie!! Plus they’re a breeze to make, so you can whip them up on a whim, just like I did.

Dark Chocolate Monster Cookies |

To start you’ll want to grab a jar of the Peanut Butter & Co.’s Dark Chocolate Dreams. It’s a blend of rich dark chocolate and creamy peanut butter, and let me tell you, it’s delicious on its own or baked into treats! We kind of love it sandwiched between pretzels or spread over graham crackers. I mean, that’s how the kiddos love it 😉

Dark Chocolate Monster Cookies |

I definitely prefer using a chocolate peanut butter blend for this recipe because it adds an even more intense chocolate flavor to these cookies, however, if you’re in a pinch you can swap it out for regular peanut butter or your favorite chocolate nut butter. Chill the dough for extra thick cookies and bake them for 11 minutes for crisp exteriors and soft interiors.

Dark Chocolate Monster Cookies |

Keep a glass of milk close by, because you’ll definitely want it. These dark chocolate monster cookies are the perfect treat for those of you who LOVE chocolate & peanut butter as much as I do!! Enjoy!

Dark Chocolate Monster Cookies |

Dark Chocolate Monster Cookies Recipe

These decadent dark chocolate monster cookies are full of chocolate peanut butter, oats, chocolate chips, and M&M's. They're easy to make and bake up extra soft with LOTS of gooey chocolate!
5 from 1 vote
Pin Rate
Course: Cookies
Cuisine: American
Prep Time: 10 mins
Cook Time: 10 mins
Chill Time: 30 mins
Total Time: 50 mins
Servings: 18 cookies
Calories: 246kcal
Print Recipe


  • 1/2 cup unsalted butter - room temperature
  • 1/2 cup chocolate peanut butter - Peanut Butter & Co. Dark Chocolate Dreams, or any other chocolate nut butter
  • 3/4 cup brown sugar - packed
  • 1/4 cup granulated sugar
  • 1 1/2 tsp vanilla extract
  • 1 egg
  • 1 egg yolk -
  • 1 cup old fashioned rolled oats
  • 1/2 cup all purpose flour
  • 1/2 cup unsweetened cocoa powder
  • 1/2 tsp baking soda
  • 1/4 tsp kosher sea salt
  • 3/4 cup M&Ms
  • 3/4 cup semisweet chocolate chips - OR bittersweet chocolate chips


  • In a large mixing bowl or the bowl of a stand mixer, beat together the butter, peanut butter, sugars and vanilla extract. Add the egg and egg yolk, mix just until combined.
  • In a medium mixing bowl, whisk together the oats, flour, cocoa powder, baking soda, and salt. Gradually add the dry ingredients to the wet ingredients. Mix until a soft dough forms. Fold in the M&Ms and chocolate chips with a spatula.
  • Place the dough in an air-tight container and refrigerate for at least 30 minutes.
  • Meanwhile preheat oven to 350 degrees, line baking sheets with parchment paper or baking mats. Using a standard size cookie scoop (#40 or 1.5 tbsp.) scoop balls of dough and place onto prepared sheets. Place in the oven and bake for 9-11 minutes, taking care not to over-bake. The cookies will look soft, but allow them to cool on the sheets for 5 minutes before transferring them to a wire rack to cool completely.


-You can easily mix in peanut butter chocolate chips, chunks of chopped chocolate or peanut butter cups!
Nutrition Facts
Dark Chocolate Monster Cookies Recipe
Serving Size
18 serving
Amount per Serving
% Daily Value*
Saturated Fat
Vitamin A
Vitamin C
* Percent Daily Values are based on a 2000 calorie diet.
Did you make this recipe?Take a picture and tag @lmadesimple on Instagram or tag #LMSBakes! We can't wait to see your version!

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I’m partnering with Peanut Butter & Co. to bring you today’s recipe. I received this product for review, all opinions are my own. Thank you for helping me work with brands I love!

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  1. I think your cookie recipe looks like a great use of this chocolate peanut butter. My wife also makes peanut butter bars that would be great with this as a substitute.

  2. I think I would eat it by the spoonful. : ) I also like to add it to oatmeal. I normally also add chocolate chips, but I wouldn’t have to with this PB!

  3. My Mom and i always make cookies every Christmas so I would incorperate it into some of our recipes but I’m sure I would try some straight from the jar as well!

  4. Chocolate chips and M&Ms sound like the usuals in Monster Cookies. I’m definitely familiar with them because my mom used to make them all the time as I was growing up. Though, the addition of chocolate peanut butter just takes the cookies to a whole new level! These would be awesome Halloween cookies with some festive M&Ms just to make them extra-Halloweeny! 😀 I would love to use the peanut butter to make your cookie recipe! ♥

  5. Spoon plus mouth? Lol. Probably… But someone else said oatmeal which sounds amazing to me! With some bananas. Yum! Thanks for doing this!

  6. This recipe looks amazing, but there is a good chance I would just eat it all before I had a chance to make the cookies!

  7. Hubby puts peanut butter on graham crackers. I eat my peanut butter by the spoonful. Sometimes I stir in some unsweetened shredded coconut.

    Thank you for hosting the giveaway!

  8. My daughter loves to make & decorate cupcakes! I know she’d use this in either the cupcake itself or the frosting…or both!

  9. I’d have to bake cookies with it, because if I didn’t – I’d be eating it straight out of the jar with a spoon.

  10. I would use Ritz crackers and scoop it right out of the jar…….maybe not very gourmet, but it will sure taste good!

  11. Id use it in making peanut butter chocolate chip cookies. Your cookies look so good. Thank you for the chance ????

  12. I would love to make the monster cookies……the kids would love them. I’d also put it on a warm bagel for breakfast.