The Best Monster Cookies

These soft, thick, and chewy monster cookies are about to become your favorite cookie! Loaded with peanut butter, quick oats, chocolate chips and m&m's, these have all that sweet & salty flavor with the perfect chewy texture!

Course Dessert

Cuisine Cookie

Keyword monster cookie

Prep Time 10

Cook Time 11

Total Time 25

Servings large cookies

Calories 367kcal

Author Melissa Rose

Ingredients

½ cup unsalted butter (1 stick) softened
½ cup light brown sugar
¾ cup granulated sugar
1 cup creamy peanut butter
2 large eggs
2 teaspoons vanilla extract
1 teaspoon baking soda
½ teaspoon salt
1 ½ cup quick oats
1 ¼ cups all-purpose flour
1 cup semi-sweet chocolate chips (+ more for topping, if desired)
1 cup m&m's + a few extra for pressing on top

Instructions

Preheat oven to 350°F.
In a large bowl, use an electric mixer on medium-high speed to cream softened ½ cup unsalted butter (1 stick), ½ cup light brown sugar, and ¾ cup granulated sugar for 1-2 minutes.
Add in creamy 1 cup creamy peanut butter and mix until incorporated.
Add the 2 large eggs and 2 teaspoons vanilla extract and mix on low speed until combined.
Add in 1 teaspoon baking soda and ½ teaspoon salt and mix for another 5-10 seconds until combined.
Add 1 ½ cup quick oats and 1 ¼ cups all-purpose flour and mix on medium until combined.
Add in 1 cup semi-sweet chocolate chips and 1 cup m&m's and mix until just combined.
Scoop dough into ¼ cup (4 tablespoons) sized scoops (I use this stainless steel cookie scoop!), roll into balls, then gently flatten each dough ball into a ½" thick disc; this will also help them spread instead of be puffy.
If desired, press extra m&m's on top of each cookie for a pretty presentation.
Bake at 350°F for 10-12 minutes. Do not overbake. The cookies will continue to bake on the hot pan, allowing them to firm up without overbaking.
Allow to cool, then enjoy! It's important for them to cool; they will be fragile while they're warm.

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