Monster Cookies are BIG chewy cookies loaded with peanut butter, oats, M&Ms, and chocolate chips.

Sweet and nutty, they’re a classic cookie recipe the whole family will love!


Unsalted butter Light brown sugar Creamy peanut butter Egg Vanilla extract Baking soda All-purpose flour Kosher salt Quick oats M&Ms Bittersweet chocolate chips

In the bowl of a stand mixer, cream the butter, sugar, and peanut butter until the mixture is fluffy. Add the egg and vanilla and continue to mix.


In another mixing bowl, whisk together the baking soda, flour, and salt. 


Set the mixer speed to low and slowly add the dry ingredients to the wet ingredients and mix until just combined. Fold in the oats, M&Ms, and chocolate chips.


Spoon 2 tablespoon portions of dough onto the prepared baking sheet with 2 inches of space between them. Bake for until the edges are golden brown.


They’re mega-big, super chewy, and everything delicious all rolled together into one tasty recipe.

Monster cookies are unlike any other cookie recipe you’ve tried before!

Hi! I’m Kasey from All Things Mamma where I dish up family favorite recipes that are easy to make with simple, everyday ingredients. Get my FREE dessert ebook containing My TOP Easy Weeknight Dessert Recipes! Click the link below to download it for free! ($9.99 value)