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4.75 from 4 votes
2 Comments

Monster Cookies

Total Time27 minutes minutes
Recipe
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By: Joanna Cismaru Posted: 10/15/20 Updated: 05/17/24

This post may contain affiliate links. Please read my disclosure policy.

These Monster Cookies take all of your favourite cookie components and combine them into one “Monster” creation! Peanut butter, oats, chocolate chips and m&ms make up this sweet treat.

Table of Contents

Toggle
  • Why This Recipe Works
  • Ingredient Notes
  • How To Make Monster Cookies
  • FAQs & Expert Tips
  • Frequently Asked Questions
  • Storing Leftovers
  • More Related Recipes:
  • Subscribe & receive a FREE Comfort Food Recipe Book!
  • Monster Cookies
  • Did you try this recipe?
a stack of monster cookies.

If you’re anything like me, you LOVE cookies and have a hard time choosing which kind to bake! Enter, these Monster Cookies. These delectable little treats take a piece of every popular cookie and combine it into one masterpiece!

Why This Recipe Works

  • Simple Ingredients
  • Packed Full Of Goodies
  • Easy to Make
  • Chewy & Delicious Cookies

The ingredient list for these cookies is simple, taking pantry staple ingredients and turning them into something fabulous! Peanut butter, oats, chocolate chips and m&ms transformed into one cookie – sounds perfect to me!

Ingredient Notes

overhead shot of all ingredients needed to make monster cookies.
  • Butter – I used unsalted butter, whichever you use you want to make sure it is softened!
  • Sugar – You’ll need both granulated and brown sugar.
  • Peanut Butter – Smooth or chunky, your choice!
  • Oats – I used quick-cooking oats, therefore these cookies are healthy in my books.
  • Chocolate – I used mini M&Ms and chocolate chips to make these “monster” cookies. You can use what you’d like!

How To Make Monster Cookies

detailed process shots showing how to make monster cookies.
  1. Preheat Oven: Preheat the oven to 350F.
  2. Mix: Add the butter, brown sugar, and granulated sugar to a large mixing bowl. Beat until light and creamy. Add the peanut butter, eggs, baking soda, baking powder, and vanilla. Continue to beat until smooth.
  3. Add Ingredients: Add the oats, M&Ms, and chocolate chips to the bowl. Use a spatula or wooden spoon to mix everything together until well combined.
  4. Scoop: Line 2 baking sheets with parchment paper. Use a cookie scoop, ice cream scoop, or 1/4 cup measure to scoop the cookie dough onto the sheet, giving them room to spread.
  5. Bake & Enjoy: Bake the cookies for 10-12 minutes, or just until the edges begin to brown. Let the cookies cool fully on the sheet. Enjoy!
overhead shot of a bunch of monster cookies on a cooling rack.

FAQs & Expert Tips

Frequently Asked Questions

What Are Monster Cookies?

If you are unfamiliar with them, monster cookies are a combination of peanut butter oatmeal cookies with chocolate chips and M&Ms. It is said that they got their name because they are “the Frankenstein’s monster of the cookie world – a mashup of different components”. In short, this is one EPIC cookie.

Can I Make These In Advance?

You can absolutely make these cookies in advance, just mix the dough, roll it into a log and tightly wrap in plastic wrap, then into freezer safe bags. Freeze for up to 3 months, then let thaw in the refrigerator for an hour or two before slicing and bake as directed above!

What Can I Add To These Cookies?

Now, monster cookies got their name because of the mash-up of different cookie types combined into one, but who says you can’t add more to it! A few other options to try adding to your monster cookies:
Toffee pieces, Shredded Coconut, Hershey’s Kisses, Assorted Candy Bar Bits, Nuts – almonds, walnuts or macadamia nuts

How To Serve

Is there any way to serve cookies other than with a big glass of milk?! These monster cookies NEED a good glass of milk with them 😉

freshly baked monster cookies on a cooling rack.

Tips

  • Greasing baking sheets isn’t necessary – it’s easier to use parchment paper to line your baking sheets. You’ll thank me at clean up time!
  • Don’t over bake your cookies! Take them out as soon as the edges begin to brown.
  • Use an ice cream scoop for easy form cookies!

Storing Leftovers

To help your cookies stay fresh, store them in an airtight container at room temperature for about 3-4 days. After that, it’s best to freeze them!

Freezing

After your monster cookies have cooled completely. Place them in a single layer on a parchment-lined baking sheet to freeze them (this will help them not stick together in the bag), then store them in a freezer-safe zip-top storage bag . Squeeze out extra air and place flat in the freezer for up to 3 months.

a bunch of monster cookies.

More Related Recipes:

  • Peanut Butter Cookies
  • Chocolate Chip Cookies
  • Hazelnut Toffee Chocolate Chip
  • Soft Oatmeal Cookies
  • No Bake Peanut Butter Chocolate Bars

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a stack of monster cookies.
Recipe
4.75 from 4 votes

Monster Cookies

These Monster Cookies take all of your favourite cookie components and combine them into one "Monster" creation! Peanut butter, oats, chocolate chips and m&ms make up this sweet treat.
Prep: 15 minutes mins
Cook: 12 minutes mins
Total: 27 minutes mins
Print
Rate
36

Ingredients

  • ½ cup butter unsalted, softened
  • 1 cup brown sugar
  • 1 cup sugar granulated
  • 1 ½ cup peanut butter
  • 2 large eggs
  • 1 teaspoon baking soda
  • 1 teaspoon baking powder
  • 1 teaspoon vanilla extract
  • 4 ½ cups quick-cooking oats
  • ¾ cup mini M&Ms
  • ¾ cup chocolate chips
US Customary – Metric

Instructions

  • Preheat the oven to 350F.
  • Add the butter, brown sugar, and granulated sugar to a large mixing bowl. Beat until light and creamy. Add the peanut butter, eggs, baking soda, baking powder, and vanilla. Continue to beat until smooth.
  • Add the oats, M&Ms, and chocolate chips to the bowl. Use a spatula or wooden spoon to mix everything together until well combined.
  • Line 2 baking sheets with parchment paper. Use a cookie scoop, ice cream scoop, or 1/4 cup measure to scoop the cookie dough onto the sheet, giving them room to spread.
  • Bake the cookies for 10-12 minutes, or just until the edges begin to brown. Let the cookies cool fully on the sheet.

Tips & Notes:

  1. To help your cookies stay fresh, store them in an airtight container at room temperature for about 3-4 days. After that, it’s best to freeze them!
  2. Freezing: After your monster cookies have cooled completely. Place them in a single layer on a parchment-lined baking sheet to freeze them (this will help them not stick together in the bag), then store them in a freezer-safe zip-top storage bag . Squeeze out extra air and place flat in the freezer for up to 3 months. 

nutrition facts

Serving: 1cookie Calories: 213kcal (11%) Carbohydrates: 26g (9%) Protein: 5g (10%) Fat: 11g (17%) Saturated Fat: 4g (25%) Cholesterol: 18mg (6%) Sodium: 114mg (5%) Potassium: 132mg (4%) Fiber: 2g (8%) Sugar: 18g (20%) Vitamin A: 112IU (2%) Vitamin C: 1mg (1%) Calcium: 32mg (3%) Iron: 1mg (6%)
Author: Joanna Cismaru
Course: Cookies, Dessert
Cuisine: American

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Joanna Cismaru

Joanna Cismaru

I’m Joanna (Jo for short) and this is my blog where I share with you my culinary adventures. Here you will find a variety of recipes using simple everyday ingredients and creating wonderful, delicious and comforting meals, including some decadent desserts. Find me on Facebook, Instagram, and Pinterest.

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