Easy Monster Cookies Recipe

Easy Monster Cookies Recipe! Thick, Chewy, and Soft Giant Monster Cookies with M&Ms, Oatmeal, Chocolate Chips, and Peanut Butter!

The Best Easy Monster Cookies Recipe for thick, chewy, and soft monster cookies!

One of our go-to cookie recipes for an after-school snack or entertaining friends!

Plus, here are even more Delicious Cookie Recipes!

Monster Cookie Dough in a Bowl

How do you make Monster Cookies?

To make Monster Cookies, you add a little bit of all the goodies! Oats, Chocolate Chips, Peanut Butter, and M&Ms! You can also add coconut if you’d like! Bake cookies low and slow for soft, chewy cookies.

Monster Cookies on a Baking Sheet

Baking larger cookies at a lower temperature and for a longer amount of time will help them to bake evenly. You will want to pull them out of the oven a little underdone so they don’t get over baked and turn hard. 

Can you use instant oatmeal in Monster Cookies?

You can use quick oats or whole oats in this recipe, I wouldn’t use instant oatmeal if you can help it, but it may work just as well! 

How to get thick, large Monster Cookies

I used a 3 Tablespoon cookie scoop like this one to get these large cookies. I love making bigger cookies and cooking them slower to get them soft and chewy. It’s nice having different size cookie scoops for different baking options! 

 

Monster Cookie Ingredients in Bowls

Monster Cookies Recipe

Ingredients:
1/2 cup (1 stick) unsalted butter (softened)
1/2 cup white granulated sugar
1/2 cup light brown sugar
1/2 cup peanut butter
1 egg
1/2 teaspoon pure vanilla extract
1 1/4 cup unbleached flour
1/2 teaspoon baking soda
1/2 teaspoon table salt
1 cup rolled oats
1 cup M&Ms
1/2 cup mini semi sweet chocolate chips

Directions:
Preheat the oven to 300 degrees and line a baking sheet with parchment paper.
Cream together butter, white sugar, and brown sugar in a mixing bowl.
Add the peanut butter, egg, and vanilla and mix well.
Stir in flour, baking soda, and salt.
Fold in oats, M&Ms, and Chocolate Chips.
Using a 3 tablespoon cookie scoop, create cookie dough balls and place them about 2” apart on the prepared cookie sheet.
Bake for 20-22 minutes or until the edges start to brown and the center is soft.
Remove from the oven and sprinkle with extra M&Ms (optional).
Let the cookies cool on the cookie sheet for 20-30 minutes for the center and chocolate to set or serve warm and gooey.

A stack of four oatmeal chocolate chip cookies with M&Ms.

Easy Monster Cookies Recipe

Yield: 13 Cookies
Prep Time: 10 minutes
Cook Time: 20 minutes
Additional Time: 30 minutes
Total Time: 1 hour

Easy Monster Cookies Recipe! Thick, Chewy, and Large Monster Cookies with Peanut Butter, Oats, M&Ms, and MORE!

Ingredients

  • 1/2 cup (1 stick) unsalted butter (softened)
  • 1/2 cup white granulated sugar
  • 1/2 cup light brown sugar
  • 1/2 cup peanut butter
  • 1 egg
  • 1/2 teaspoon pure vanilla extract
  • 1 1/4 cup unbleached flour
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon table salt
  • 1 cup rolled oats
  • 1 cup M&Ms
  • 1/2 cup mini semi sweet chocolate chips

Instructions

  1. Preheat the oven to 300 degrees and line a baking sheet with parchment paper.
  2. Cream together butter, white sugar, and brown sugar in a mixing bowl. 
  3. Add the peanut butter, egg, and vanilla and mix well.
  4. Stir in flour, baking soda, and salt. 
  5. Fold in oats, M&Ms, and Chocolate Chips. 
  6. Using a 3 tablespoon cookie scoop, create cookie dough balls and place them about 2” apart on the prepared cookie sheet. 
  7. Bake for 20-22 minutes or until the edges start to brown and the center is soft. 
  8. Remove from the oven and sprinkle with extra M&Ms (optional).
  9. Let the cookies cool on the cookie sheet for 20-30 minutes for the center and chocolate to set or serve warm and gooey.

Did you make this recipe?

Share it with me! I'd love to see your creation!

These Thick, Soft, and Chewy Monster Cookies are perfect for sharing with friends or making for party! 

Easy Monster Cookies Broken in Half on Plate

Change the color of M&Ms and create Monster Holiday Cookies for whatever holiday you are celebrating like 4th of July, Christmas, Halloween, Easter, or Valentine’s Day! 

We LOVE monster cookies – the combination of peanut butter, chocolate chips, oats, and M&Ms is a crowd favorite. Switch the Chocolate Chips for Chocolate Chunks or add coconut for another layer of goodness! 

Stack of Chewy Monster Cookies

Plus, be sure to try these Chocolate Chunk Cowboy Cookies for another thick, soft, and chewy cookie! These cookies are perfection for any chocolate chip cookie lover (but even better)! 

 

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