★★★★★

Monster Cookies

These Monster Cookies are full of M&Ms, chocolate chips, peanut butter and oats for a cookie that is fun, chewy and delicious (don’t tell but I added raisins too)! They’re easy to make and perfect for sharing or freezing.

Calling all cookie lovers! If you love Peanut Butter Cookies Recipe, today’s recipe is going to be a new favorite. Make it next level and whip up some Monster Cheesecake Bars instead! Or give these Oreo Brownies a try next time you’re craving chocolate!

Monster cookies on silver cooling rack.

Why are they called Monster Cookies

There’s nothing scary about these cookies! Monster Cookies get their name because they’re well . . . the MONSTER of cookie recipes.

Like Frankenstein’s monster, these cookies are a mish-mash of other kinds of cookies. With peanut butter cookie dough, oats, M&Ms, chocolate chips, and raisins: Monster Cookies have it all.

There is great debate though about what you MUST include in order to consider them a Monster Cookie.

For me, it’s all about the peanut butter, oats and (of course) the CHOCOLATE.

For today’s recipe, I started with a peanut butter oatmeal cookie dough. I added in M&M’S and chocolate chips. I usually add raisins to HALF the cookie dough batter, because in my world they are important!

However, leave them out if you prefer. I know when it comes to oatmeal cookies my kids prefer the oatmeal chocolate chip cookies while I adore oatmeal raisin cookies.

Either way, these are great because you make what you love.

Ingredient Notes

Ingredients needed to make monster cookies.

Creamy peanut butter. Use regular shelf-stable peanut butter for best results.

M&Ms. I used M&Ms baking bites. Regular or mini M&M candies work well.

Raisins. Add 3/4 cup of raisins to the dough if you like raisins in your monster cookies!

Quick Cook Oats. This recipe uses these quick cook oats. Unlike my oatmeal scotchies recipe, which uses old fashioned oats. Today’s cookie dough doesn’t have the right proportions for old fashioned oats. They would end up too dry.

Easy Instructions

Step by step photos showing how to make monster cookies.

Make Cookie Batter. Start by creaming together unsalted butter with white and brown sugars. Beat in the peanut butter, then eggs and vanilla.

Add mix-ins. Gradually mix in flour, quick oats and baking soda to form a dough. Fold in the chocolate chips and M&Ms. You can add the raisins here too, if you’re using them.

Bake. Scoop the dough onto a lined baking sheet and bake for about 12 minutes. The cookies should be lightly golden brown on the top.

Tips & Tricks

  • Use my homemade vanilla extract for best cookie dough flavor!
  • For evenly sized cookies, use a 2 tablespoon sized cookie scoop to portion out the dough.
  • Storing: Monster Cookies can be stored in an airtight container at room temperature for up to 1 week.
  • Freezing: Baked cookies can be stored in the freezer if you want to keep them longer. Thaw at room temperature before enjoying!
Monster cookies baked on a parchment paper lined cookie sheet.

Recipe FAQs

Can you freeze unbaked cookie dough?

Yes, I love to make cookie dough ahead of time and freeze! Scoop balls of dough onto a cookie sheet. Freeze for 1 hour or until frozen solid. Transfer frozen dough to freezer bags and store until ready to bake. When you’re ready to bake Monster Cookies, place the dough back onto the cookie sheet. Bake from frozen adding a few minutes of extra baking time.

Why can’t I use natural peanut butter in Monster Cookies?

In my experience, natural peanut butter tends to make cookies greasy and crumbly. This is because the oils naturally separate from the nut protein without the added stabilizers.

Can I use old fashioned oats instead of quick oats?

No, I would not use old fashioned or whole rolled oats here. Quick oats are processed more finely, which allows them to incorporate into the cookie dough.

Monster cookies stacked on top of eachother.

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Yield: 60 cookies

Monster Cookies Recipe

Prep Time 15 minutes
Cook Time 15 minutes
Total Time 30 minutes

These Monster Cookies are full of M&Ms, chocolate chips, peanut butter and oats for a cookie that is fun, chewy and delicious (don't tell but I added raisins too)! They're easy to make and perfect for sharing or freezing.

Ingredients

  • ½ cup unsalted butter, softened
  • 1 cup granulated sugar
  • 1 cup light brown sugar, packed
  • ¾ cup creamy peanut butter
  • 3 large eggs
  • 1 Tablespoon pure vanilla extract
  • 1 cup all-purpose flour
  • 3 ½ cups quick cook oats
  • 2 teaspoon baking soda
  • 1 package (11 oz) semi-sweet chocolate chips
  • 1 package (10 oz) M&M'S mini chocolate baking bits (you can use regular M&M'S candy if you prefer)
  • ¾ cup raisins, optional

Instructions

  1. Preheat oven to 350 degrees F. Line a large cookie sheet with parchment paper. Set aside.
  2. In a large mixing bowl, beat butter with sugars until creamy, about 3 minutes. Add in peanut butter and beat well.
  3. Add eggs and vanilla until well combined. Slowly add in flour, oats and baking soda, mix until blended.
  4. Fold in chocolate chips and candy pieces.
  5. Using a 2 Tbsp cookie scoop, drop cookie dough onto baking sheet. Bake for 12-15 minutes, until lightly browned on top. Remove from oven and allow to cool several minutes on pan before cooling on a wire rack.
  6. Store in airtight container for up to one week. ENJOY!

Notes

  • Use my homemade vanilla extract for best cookie dough flavor!
  • For evenly sized cookies, use a 2 tablespoon sized cookie scoop to portion out the dough.
  • Storing: Monster Cookies can be stored in an airtight container at room temperature for up to 1 week.
  • Freezing: Baked cookies can be stored in the freezer if you want to keep them longer. Thaw at room temperature before enjoying!
  • To freeze cookie dough, drop scooped dough onto parchment paper lined baking sheet and freeze for one hour. After an hour, remove cookie doughs and place in ziploc freezer bag. When ready to bake, add several minutes to baking time.

Nutrition Information:

Yield:

60

Serving Size:

1 cookie

Amount Per Serving: Calories: 99Total Fat: 4gSaturated Fat: 2gTrans Fat: 0gUnsaturated Fat: 2gCholesterol: 14mgSodium: 63mgCarbohydrates: 14gFiber: 1gSugar: 8gProtein: 2g

Did you make this recipe?

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All your favorite cookie mix-ins mashed together! Monster Cookies are the colorful peanut butter chocolate treat that everyone loves.

About Aimee

Aimee is a dessert lover (specifically rice krispie treats), workout enthusiast, self-taught foodie, and recipe creator.

Learn more about Aimee.

Affiliate Disclosure:**There may be affiliate links in this post! By clicking on them, or purchasing recommended items I may receive a small compensation. However, I only recommend products I love! Thank you for supporting Shugary Sweets! See my disclosure policy for more info**

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Posted on March 31, 2021

Comments & Reviews

  1. These cookies have just about everything in them but the kitchen sink! Love the base of oatmeal peanut butter cookies and the add-ons are the best! I’m with your kids – no raisins in these beauties! lol

  2. Thanks for this great recipe! When you freeze the dough, do you need to thaw them out before baking? Will I need to adjust the baking time?

  3. I love monster cookies! Great recipe — and great tip on where the name came from. I’m with your kids – my personal motto is never put a raisin where a chocolate chip could go, hehe. Can’t wait to make this one! Thanks, Aimee!

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