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My mom always says that she can trace every failed diet back to a single M&M. And I’d have to say I’m with her. Anyone else? M&Ms are like the gateway drug that lead to all other paths of sweet (but skinny jeans-obliterating) indulgences. Like… this M&M Oatmeal Chocolate Chip Cookie recipe. I’d have to say that’s a pretty natural next step to take after M&Ms.

Why This Oatmeal Chocolate Chip Cookie Recipe?

A natural and classically delicious next step! These cookies are total comfort food. They’re hearty and chock full of buttery cookie goodness, and we could not get enough of them around here. In fact, they didn’t even make it to the office. We had these gobbled up at somewhere close to the 48-hour mark… maybe even less than that!

This recipe is based on the King Arthur Flour Chocolate Chip Oatmeal Cookies I made a couple of months ago. So far, KAF has produced my two favorite chocolate chip cookie recipes in the Chocolate Chip Cookie Experiment, and this is one of them.

This oatmeal chocolate chip cookie recipe makes super chewy and (dare I say it again? Ok, I dare…) hearty cookies. They’re just so super satisfying, and those M&Ms just put these cookies right over the top.

I am seriously smitten.

Warning: don’t make these home alone!

On second thought… the fat pants might be worth not having to share. Your call 😉

If you’re a fan of oatmeal cookies (and who isn’t?), try this Crumbl Oatmeal Cookie Copycat recipe — or go that extra flavor mile and savor this Raspberry Crumbl Cookie recipe.

M&M Oatmeal Chocolate Chip Cookies

Yield: 2 dozen large cookies

These cookies are wonderfully chewy with a great oatmeal texture and jam-packed with 3 cups of chocolate chips and M&Ms!

Ingredients

1 cup butter, softened
1 cup light brown sugar
1/2 cup granulated sugar
1 large egg
1 large egg yolk
1 tablespoon vanilla extract
2 cups All-Purpose Flour
1 cup quick-cooking or old-fashioned oats
1 teaspoon baking powder
1 teaspoon baking soda
1 teaspoon salt
1 1/2 cups miniature semisweet chocolate chips
1 1/2 cups miniature M&Ms

Instructions

Preheat oven to 325ºF.

Beat together the butter and sugar until smooth and creamy.

Mix in the egg, egg yolk, and vanilla, mixing well in between each addition.

In a large bowl, mix together the flour, oats, baking powder, baking soda, and salt. Add this dry mixture to the wet mixture. Mix until dough forms.

Mix in chocolate chips and M&Ms.

Scoop the dough onto prepared baking sheets, leaving about 2 inches in between each for spreading.

Bake for 12-15 minutes until edges are lightly golden. Let cool on the baking sheet before transferring to a wire rack.