Monster Cookies

Updated December 01, 2022 Monster Cookies are loaded with oats, peanut butter, chocolate chips, and M&M‘S. Everyone loves this classic cookie recipe, even the Cookie Monster approves! This classic cookie recipe is made with so many delicious ingredients: oats, peanut butter, M&M’S, chocolate chips…just listing it out makes me want a fresh batch in the oven right now! They are loaded with goodness. Why are they called Monster Cookies? It’s because they’re like the Frankenstein’s monster of the cookie world…a bunch of cookies all mashed together in ONE recipe! The cookies are part peanut butter cookie, part oatmeal cookie, part chocolate chip cookie, part M&M cookie, and 100% DELICIOUS cookie! All of the BEST in one cookie. You also need to check out my Monster Cookie Bars, they are equally delicious.

The ingredient list might look a little long, but you probably already have most of the ingredients in your pantry.

Oats– use old fashioned oats and not quick oats. All-purpose flourBaking soda– check the date to make sure it is fresh) SaltButter– I like to use unsalted butter for baking so I can control the amount of salt.Peanut butter– I normally love natural peanut butter, but for this recipe, I use regular creamy Skippy peanut butter.Sugar– brown sugar and granulated sugarEgg– always use large eggs. Vanilla extractChocolate chips– I like semi-sweet chocolate chips, but milk or dark chocolate work well too.M&M’S– the colorful candies are the star of the cookies. Flake sea salt– for sprinkling on top!

How to Make Monster Cookies

We’ve got a pretty standard cookie procedure here! Let’s get baking!

Preheat the oven to 350 degrees F and line two large baking sheets with parchment paper or Silpat baking mats.Get all the dry ingredients stirred together in a big mixing bowl: oats, flour, baking soda, and salt. Set it aside; we’ll come back to it in a minute.Use a stand mixer or hand mixer, beat the peanut butter, softened butter, and sugars together on medium speed until everything is creamy and smooth. Use a spatula to scrape the sides down if necessary!Add in the egg and vanilla and keep that mixer going until everything is good and combined.Add in the dry ingredients, but only mix them until they’re just combined! Don’t over mix! Finish the dough off by gently stirring in chocolate chips and M&M’s.Scoop the dough into balls with about two tablespoons of dough per cookie. Place them on the prepared sheets with two inches between each cookie.Now we bake! Give them 10-12 minutes in the oven, until the cookies are lightly browned around the edges but soft in the middle.Remove them from the oven and sprinkle with sea salt. This is also a great tie to press a few additional chocolate chips or M&Ms into the tops so they look nice and extra colorful. Let the cookies cook for about 5 minutes. These cookies have a LOT of goodness baked in, so you want to make sure they’re set before moving to a wire rack to cool completely!This cookie recipe can easily be doubled! Sometimes you NEED a MONSTER batch of MONSTER cookies:)

Optional Add-Ins

These cookies are already loaded, but the sky is really the limit here! If you want to add something additional, try…

Peanut butter chips or butterscotch chipsPretzelsCoconut Raisins or dried cranberriesPeanuts, almonds, or walnuts

How to Store & Freeze

How to Store: You can store the monster cookies on the countertop in an airtight container for 3 to 5 days. To keep the cookies soft, place a piece of bread in the container. The bread will get rock hard, but the cookies will stay soft. To freeze the cookie dough, scoop the dough into balls and place onto a cookie sheet and pop them in the freezer for about an hour, just until they lose their stickiness and are mostly frozen. After that you can put them into a freezer-safe container or freezer bag! When you’re ready to bake, pull them out and bake as directed, just add a couple of minutes to the baking time. To freeze baked cookies, place cooled cookies in a freezer container or freezer bag and freeze for up to 2 months. Defrost and enjoy or you can even eat them frozen! I love frozen monster cookies!

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