This jumbo monster cookies recipe yields 18 delicious cookies that are chewy on the inside and crispy on the outside. Peanut butter, m&ms, oats, and chocolate chips. Absolutely perfect and made without flour!
You might also like our jumbo chocolate chip cookies or bakery style sugar cookies!

Watch our step by step video!
The cookie jar was empty so it was time to get baking. This week I made a batch of JUMBO MONSTER cookies! Have you had a monster cookie before? They are a mash-up of the best cookie ingredients all in one, and they don't have any flour in them, just oats. Simple. My uncle actually shared the recipe with me years ago. We were visiting and he asked me to make him a batch----knowing how much I love to bake. I was happy to oblige!
What are monster cookies?
I actually looked it up a while ago and they are called monster cookies because they are the Frankenstein of the cookie world. M&Ms, oatmeal, peanut butter, and chocolate chips---all meld into one delicious jumbo monster cookie. And making them big just makes sense, after all, they are have the word "monster" in them.
I make mine with a ⅓ measuring cup as a scoop, but you don't have to make them that big. The recipe below will make 18 jumbo cookies or 2 ½ dozen regular sized (cookie scoop) cookies.
Jumbo Monster Cookies Recipe
Jumbo Monster Cookies
Jumbo monster cookies are chewy on the inside, crispy on the outside. Peanut butter, m&ms, oats, and chocolate chips. Absolutely perfect and made without flour!
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Servings: 18 cookies
Calories: 476kcal
Ingredients
- 3 eggs
- 1 ½ cup packed brown sugar
- 1 cup white sugar
- 1 teaspoon vanilla extract
- 1 teaspoon corn syrup
- 2 teaspoon baking soda
- ½ cup butter
- 1 ½ cup peanut butter
- 4 ½ cup rolled oats
- 1 cup semisweet chocolate chips
- 1 cup candy-coated milk chocolate
- pieces
Instructions
- Preheat oven to 350 degrees F (175 degrees C).
- In a very large bowl, beat the eggs.
- Add the remaining ingredients in order, mixing well. Dough will be wet and sticky.
- Use a ⅓ measuring cup or ice cream scoop to put on ungreased cookie sheet. Bake for 15 minutes.
- Let cookies stand on baking sheet for 3-5 minutes before transferring to wire cooling rack.
Notes
I always let the cookies rest on the baking sheet a few minutes before transferring to a wire rack to cool. Otherwise they may fall apart while hot.
Nutrition
Calories: 476kcal
Chewy on the inside, crispy on the outside. Peanut butter, m&ms, oats, chocolate chips...perfect.
Here's another fun cookie idea! A real monster cookie, ha!
Wendy says
Mmmmm.... we love monster cookies at our house 🙂
Kierst says
I'm sure my dad is absolutely loving that you're there making cookies for him!
Marie says
Oh, that's a very big monster 😉
Bye Marie
ChiTown Girl says
Oh, my friend, how have you never heard of these?!? Boy, did you miss out all these years! Aren't they awesome?
=)