Favorite Monster Cookies

4.3 from 6 votes

Recipe by Danelle

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Posted August 22, 2019Last Updated November 11, 2024

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Peanut butter, oats, chocolate chips and M&M’s come together in these big, chewy cookies that are always a favorite!

Why You’ll Love This Recipe

School is back in session, which means it’s time to start whipping up awesome after school snacks like these Favorite Monster Cookies!

My friend Sarah shared this recipe on Facebook awhile back, claiming they were her favorite cookies. Sarah is an amazing baker. She even has her own baking business and makes the most adorable cupcakes and sweet treats. So you know I had to try her favorite cookie recipe as soon as possible.

Be sure to check out her delicious creations on Instagram at Something Cute Co.

Needless to say, these cookies did not disappoint. I don’t think my family has ever devoured a batch of cookies so quickly. Granted I live with a bunch of hungry teenage boys…..but still.

I guess it’s because these cookies have so many things that cookies great–peanut butter, oats, chocolate chips and M&M’s, just to name a few.

And if you have certain dietary restrictions, there is no flour in this recipe, which makes them a perfect treat for your gluten free friends and family.

I like to make my monster cookies nice and big (hence the name). The end result is a softer, chewier cookie. If you prefer to make smaller cookies, I suggest using mini M&M’s and cutting down the baking time by a few minutes.

Everyone in my family (except me) prefers creamy peanut butter, so that’s what I use. Personally, I think these cookies would be amazing made with crunchy peanut butter though.

With a tall glass of cold milk, these cookies are pretty much the ultimate after school snack. At least that’s what my kids tell me. And let’s be honest, you’re never too old for an after school snack.

Honestly, just sitting here writing this post, I’m craving these monster cookies. I’ll probably have to go bake up a batch as soon as I’m done. Hope you love them as much as we do!

Be sure to save this recipe to your favorite Pinterest board for later.

Ingredients

Butter
Peanut butter
Brown sugar
Granulated sugar
Eggs
Corn syrup
Salt
Baking soda
Oats
Chocolate chips
M&M’s

Favorite Monster Cookies

Peanut butter, oats, chocolate chips and M&M's come together in these big, chewy cookies that are always a favorite!

4.34 from 6 votes

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Course: Desserts

Cuisine: American

Prep Time: 10

Cook Time: 15

Total Time: 25

Servings: 2 -3 dozen

Calories: 212kcal

Author: Danelle

Ingredients

1 1/2 cups peanut butter
1/4 cup unsalted butter softened
1 cup packed brown sugar
1 cup granulated sugar
3 large eggs
1 teaspoon vanilla
1 teaspoon corn syrup
2 teaspoons baking soda
1/2 teaspoon salt
4 1/2 cups rolled oats
1 cup semi-sweet chocolate chips
1 1/2 cups plain M&M’s

Instructions

Preheat oven to 350 degrees. Lightly grease cookie sheets with non-stick cooking spray, or line with parchment paper.
With an electric mixer, cream together peanut butter, butter and sugars. Mix in eggs, vanilla and corn syrup.
Stir in baking soda and salt until well combined. Stir in oats, then chocolate chips and M&M's.
Using and ice cream scoop or 1/4 cup measuring cup, drop dough 2 inches apart on prepared baking sheets. Bake for 12-15 minutes, or until just golden. Allow to cool 5-10 minutes on pan before transferring to a wire rack to cool completely.