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Home » Recipes » Cookies

Chewy Monster Cookies

July 6, 2021 by brooke 15 Comments

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These chewy monster cookies are loaded with peanut butter, oats, m&m's and chocolate chips. The perfect cookie to make you feel like a kid again, and the best part is they are made without flour, so they're gluten free.

Chewy Monster cookies with a piece missing from one

CHEWY MONSTER COOKIES

As a kid I loved anything that had m&m's in it. My Mom would put them in our rice krispie treats and cookies, and there's just something about the hard coating and the melty inside that always leaves me so satisfied. These cookies are the perfect chewy cookie with little bits of texture and crunch from the oats and chocolate, and they're so quick and easy to make. And the best part is anyone and everyone seems to love them!

all ingredients needed for cookies

INGREDIENTS NEEDED TO MAKE THESE COOKIES

  • Butter
  • Brown Sugar
  • Granulated Sugar
  • Eggs
  • Vanilla
  • Baking Soda
  • Creamy Peanut Butter
  • Old Fashioned Oats (make sure they're GF if needed)
  • Chocolate Chips
  • M&M's
  • Flaked Salt
cookies layered on a plate

HOW TO MAKE CHEWY MONSTER COOKIES

  1. Preheat oven to 350° F. Line 2 baking sheets with parchment paper.
  2. In the bowl of a stand mixer, cream together butter and sugars until smooth, about 3-4 minutes.
  3. Add eggs, one at a time, mixing in between. Then add vanilla, peanut butter, and baking soda and mix on medium speed until smooth.
  4. Stir in oats, m&m's and chocolate chips until well combined.
  5. Scoop dough using a medium to large cookie scoop, I like to use a 3 tablespoon size for these cookies.
  6. Bake for 8-10 minutes, depending on size, or until a light golden brown around the edges and top.
hand breaking the top cookie on a stack

SOME HELPFUL TIPS

  • If you are needing these cookies to be Gluten Free, make sure that your oats are in fact gluten free because all of them are not.
  • Allow your ingredients to be room temperature before beginning to mix.
  • I have listed both chocolate chips and m&m's as ingredients. You are welcome to use all chocolate chips or all m&m's, or do a mix as I have suggested.
  • These cookies are originally called "monster cookies" because of their size. I like to make them using a 3 tablespoon sized scoop with gives them a medium size, you are welcome to bake them larger or smaller. Just make sure that you watch the baking time and adjust accordingly.
  • These cookies are best baked on parchment paper because that helps to keep them from spreading. A sil-pat would also work well if you have either.
scattered chewy monster cookies with m&m's around them

If you like oatmeal cookies you should also try my Brown Butter Oatmeal Raisin Cookies, or my Oatmeal Chocolate Chip Cookies.

For more yummy treats follow me on instagram @thesaltedsweets. And be sure to tag me and comment below if you make them and love them as much as I do.

Chewy Monster cookies with a piece missing from one.

Chewy Monster Cookies

brooke
These chewy monster cookies are loaded with peanut butter, oats, m&m's and chocolate chips. The perfect cookie to make you feel like a kid again, and the best part is they are made without flour, so they're gluten free.
5 from 12 votes
Print Recipe Pin Recipe
Prep Time 15 mins
Cook Time 20 mins
Course Dessert
Cuisine American
Servings 21
Calories 240 kcal

Ingredients
 
 

  • ¼ cup butter room temperature
  • 1 cup brown sugar
  • ½ cup granulated sugar
  • 2 large eggs room temperature
  • 1 teaspoon vanilla
  • 1¼ teaspoon baking soda
  • 1 cup creamy peanut butter
  • 3 cups old fashioned oats GF if you need them to be
  • ½ cup chocolate chips
  • ½ cup m&m's
  • flaked salt to top

Instructions
 

  • Preheat oven to 350° F. Line 2 baking sheets with parchment paper.
  • In the bowl of a stand mixer, cream together butter and sugars until smooth, about 3-4 minutes.
  • Add eggs, one at a time, mixing in between. Then add vanilla, peanut butter, and baking soda and mix on medium speed until smooth.
  • Stir in oats, m&m's and chocolate chips until well combined.
  • Scoop dough using a medium to large cookie scoop, I like to use a 3 tablespoon size for these cookies. Salt on top.
  • Bake for 8-10 minutes, depending on size, or until a light golden brown around the edges and top. Salt a little more if you love it like me!

Notes

If you need these cookies to be GF, make sure that your oats are GF.
You can use any kind of chocolate chips for this recipe, and or all chocolate chips or m&m's. I like having a mix.
The butter and eggs should not be completely chilled from the fridge, but should also not be room temperature. I try to let them sit out for about 15-30 minutes before I begin my cookie making!
I have given both cups and grams as measurements. Grams will be more precise.  If you don’t have a kitchen scale, no problem! 

Nutrition

Calories: 240kcalCarbohydrates: 31gProtein: 5gFat: 12gSaturated Fat: 4gPolyunsaturated Fat: 2gMonounsaturated Fat: 4gTrans Fat: 1gCholesterol: 25mgSodium: 156mgPotassium: 143mgFiber: 2gSugar: 21gVitamin A: 104IUVitamin C: 1mgCalcium: 29mgIron: 1mg
Keyword chocolate chips, gluten free, m&m's, oats, peanut butter
Tried this recipe?Let us know how it was!

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Reader Interactions

Comments

  1. Sandy

    October 03, 2021 at 11:12 am

    5 stars
    Such a great cookie. Love that it is also gluten free for when I need to bake a treat for those that can’t have wheat.

    Reply
    • Amy

      November 07, 2021 at 4:53 pm

      5 stars
      I love these!!! I chilled them after and then crumbled on top of my protein shake! Such a yummy treat ❤️

      Reply
      • brooke

        November 07, 2021 at 5:22 pm

        That sounds amazing on top of a shake! Definitely going to try that next time I make them!

        Reply
  2. Sarah

    November 08, 2021 at 7:14 am

    5 stars
    We loved these!! Super simple to make and love that it’s an option to take somewhere if some people are gluten free. They stay good and chewy even after a couple of days!

    Reply
  3. Jessica

    January 28, 2022 at 10:05 pm

    5 stars
    I made this cookie gluten free and dairy free- using dairy free butter/chocolate and they turned out SO good! Thanks for the recipe!

    Reply
    • brooke

      January 29, 2022 at 2:31 pm

      Thank you so much for leaving a comment so that others can know this also!!! Yay!

      Reply
  4. Ruth

    February 10, 2022 at 5:42 pm

    5 stars
    Delicious! Made them with GF oats for my GF friends, who loved them. They were loved by the non GF friends too ❤️

    Reply
  5. Michael

    September 19, 2022 at 2:18 am

    5 stars
    These were so easy to make and turned out AMAZING! Don’t let the “gluten free” part scare you away because these don’t taste like a gluten free cookie. They have that perfect crispy outside and chewy/gooey inside. I had to hide these from myself because I put down half a dozen in one sitting!

    Reply
  6. Kylie

    October 28, 2022 at 9:19 pm

    5 stars
    Wow these are addicting….!! Thank you for this delicious recipe!

    Reply
    • brooke

      October 28, 2022 at 10:01 pm

      Yay! Glad they hit the spot! Thank you.

      Reply
  7. Mari

    October 30, 2022 at 4:29 pm

    Could you add cocoa powder to make them dark colored without altering the recipe too much? (Thinking about using the ghoul mix m&ms?)

    Reply
    • brooke

      October 31, 2022 at 7:54 am

      I haven't tried that before, I think you could add a little without it affecting it much, but I'm not sure they'd turn out super dark. I've done these as is with the halloween mix before and they were still super cute and festive!

      Reply
  8. Debra

    November 26, 2022 at 10:22 pm

    5 stars
    These were a big hit in my house! Soft, chewy, and just plain yummy.

    Reply
  9. Danielle

    February 24, 2023 at 10:27 am

    5 stars
    These were delicious and perfect for our GF house guest. I have tried many of your recipes and they NEVER let me down. Thank you!!

    Reply
    • brooke

      February 24, 2023 at 8:33 pm

      Thank you so much!! I really appreciate that!

      Reply

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