The Best Monster Cookies are loaded with peanut butter, oats, chocolate chips, and m&m's! They are thick, chewy, and a soft-baked cookie, with a surprise ingredient, that are crazy delicious.
Course Dessert
Cuisine American
Keyword monster cookie recipe, monster cookies, the best monster cookies
Prep Time 15 minutesminutes
Cook Time 8 minutesminutes
Total Time 23 minutesminutes
Servings 30cookies
Calories 190kcal
Author Jessica
Ingredients
1/2cupbuttersoftened
1cupbrown sugar
1/2cupcreamy peanut butter
1large egg
2teaspoonsvanilla extract
3/4cupall-purpose flour
1teaspoonbaking soda
1teaspooncornstarch
¼teaspoonbaking powder
¼teaspoonsalt
1½cupsquick oats
1cupmini semi-sweet chocolate chips
1cupmini M&M candies
Instructions
Preheat oven to 350°. Line cookie sheets with parchment paper, use a silpat liner, or spray with cooking spray.
In a large bowl (or bowl of a stand mixer) cream together the butter, brown sugar, and peanut butter until light and fluffy, about 1-2 minutes.
Mix in the egg and vanilla, scraping down the sides of the bowl as needed.
In a separate bowl, add the flour, baking soda, cornstarch, baking powder, and salt and whisk to combine.
With the mixer on low speed, slowly add the flour mixture to the wet ingredients and mix until just combined.
Add the oats, chocolate chips, and M&M candies. Mix on low speed just until dough is combined.
Use a medium cookie scoop, or about 2 tablespoons cookie dough, and place on the baking sheets. They should look like golf balls.
Bake the cookies for 7-9 minutes until the edges are just starting to brown and the top still looks slightly undercooked.
Remove from the oven and cool for 5 minutes on the baking sheet before moving them to a wire rack to cool completely.
** These cookies don't spread much after baking. If you gently press additional m&m's onto the tops of each cookie that will help flatten the cookie to more of a "cookie shape". You can also tap the hot cookie sheet against the countertop or stove top to help the cookies to fall.
Video
Notes
Natural peanut butter does not work well in this recipe. Press some additional m&m's on top of the cookie dough balls, before putting cookie sheet in the oven, for a pretty presentation. Or press some m&m's on top of the cookies after they come out of the oven to naturally press down the cookies into more of a cookie sheet. I have also made giant monster cookies. Form 1/4 cup of dough into a ball and then slightly flatten on the cookie sheet. Bake for about 11-13 minutes. 1-2 minutes will seem like a long time to mix the sugars, peanut butter, and butter but it's really important to do it for about that long. The dough will be much lighter in color and look fluffy. That's when you know you have blended it long enough. I use salted butter.