• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer

Simply So Good

  • Home
  • About
  • Recipes
  • Contact
You are here: Home / Recipes / Cookies / Monster Cookies

Monster Cookies

March 2, 2010 Updated March 4, 2023 11 Comments

100 shares
  • Share
  • Tweet
Jump to Recipe Print Recipe
 
Mmmmmmonster cookies.  Love ’em!  I don’t know why I’m starting with these?  Probably because I was baking them for my daughter to take with her to college one weekend.  I figured her roomies would love to chew on these for a few days with a glass of milk.  Should help add to the freshman fifteen. 
 
Monster cookies ingredients.
 
 
In a large mixing bowl blend the butter and peanut butter together until nice and creamy.  Did you notice that I said butter.  I should probably let you know up front that in my opinion there are no substitutes for butter.  So in all my future recipes butter means butter NOT margarine or shortening.  Enough said.
 
Blend in the sugar and brown sugar until it’s nice a smooth.
 
Mix in the eggs, corn syrup and vanilla. 
 
Don’t forget the baking soda. 
 
Now you’re going to add all 9 cups of the oatmeal.  I prefer to use the “old fashioned rolled oats”.  They make the cookie much more chewy.  No, I didn’t forget the flour.  This recipe does not call for flour – yes, it works!
 
Now mix in those semi-sweet chocolate chips. 
 
Mix those chocolate chips in well.   This is a very large batch of cookies.  Make sure your bowl is large enough to handle the batter.  I’m using a 6 quart kitchen-aid mixer and it completely fills the bowl with some spilling over, which is a good thing because whatever falls out I get to eat!  This dough is fabulous as is.
 
I use an ice cream scoop to measure out my cookie dough.  I think it’s probably a good two tablespoons of dough.  I like my cookies big and these are monster cookies.  I like to place them on parchment lined cookies sheets.  Less clean up with the parchment.  Love it.  After you have scooped the cookies onto the cookie sheets just press the dough down a little with your hand.  I guess you could use the bottom of a glass, but I think the hand works just fine. 
 
Now you’ve got to load these babies with a ton of M & M’s.  I just take a handful and smash them on.  I make sure that not one more M & M could fit on top.  Because when they cook they will spread out and you definately want a M & M in every bite!  Place them in the oven and bake for about 10-12 minutes until they are barely starting to brown around the edges. 
 
See how much they spread out.  Look I could have fit on MORE M & M’s.
 
 
 
Mmmmonster cookies.  I like to make these monster cookies for our somewhat annual Timp hike.  They are a great energy cookies with the mixture of peanut butter, oatmeal and chocolate.  Funny story – a friend, who was dieting, asked me for the recipe for my “energy cookies”.  I told her that even though they would give her energy they were still loaded with FAT and sugar!  Butter, peanut butter, come on.  She was so disappointed.
0 from 0 votes
Print

Monster Cookies

Giant chewy peanut butter oatmeal cookies topped with colorful M&M candies.

Course Dessert
Cuisine American
Keyword cookies with M & M's, Monster cookies, peanut butter cookies
Prep Time 20 minutes
Cook Time 12 minutes
Servings 72 large cookies
Calories 240 kcal
Author Janet Barton

Ingredients

  • 1 cup butter
  • 3 cups peanut butter
  • 2 cups sugar
  • 2 cups brown sugar
  • 1/2 tablespoon corn syrup
  • 6 eggs
  • 4 teaspoons baking soda
  • 1 1/2 teaspoons vanilla
  • 9 cups oatmeal old-fashioned
  • 1 1/2 cups chocolate chips
  • 2 lbs. M & M's plain (or candy-coated chocolate pieces)

Instructions

  1. Preheat oven to 350 degrees. Spray cookie sheets with nonstick spray or line cookie sheets with nonstick parchment paper or silpat liners. Set aside.

  2. In a large mixing bowl blend butter and peanut butter.  Add sugar and brown sugar until smooth for 2-3 minutes.   Mix in eggs, corn syrup, and vanilla.  Stir in baking soda.  Add oats and chocolate chips.   

  3. Using a medium-sized ice cream scoop, drop cookie dough onto an ungreased or parchment-lined cookie sheet. Flatten the dough slightly with your fingertips.  Place a handful of M&M's on top of each cookie pressing into the dough.

  4. Bake for 10-12 minutes or until barely browned.  Let cool on the cookie sheet for 5-6 minutes before transferring it to a cooling rack.

Recipe Notes

NOTES:

  • This is a huge recipe and makes 72 large cookies.  The recipe can be easily cut in half.  For smaller cookies use 2 tablespoons of dough.  Form into a ball and place on a prepared cookie sheet.
  • For gluten-free cookies be sure to use gluten-free oatmeal.
  • I use old-fashioned rolled oats because I love the chewy texture.  Quick-cooking oats can be used as well.  
  • M&M's can be substituted with any candy-coated chocolate pieces or omitted altogether.
  • If using a large-size ice cream scoop bake for 14-16 minutes.

 

Nutrition Facts
Monster Cookies
Amount Per Serving (1 cookie)
Calories 240 Calories from Fat 117
% Daily Value*
Fat 13g20%
Saturated Fat 5g25%
Trans Fat 0.1g
Polyunsaturated Fat 2g
Monounsaturated Fat 4g
Cholesterol 23mg8%
Sodium 147mg6%
Potassium 95mg3%
Carbohydrates 29g10%
Fiber 1g4%
Sugar 23g26%
Protein 4g8%
Vitamin A 135IU3%
Vitamin C 0.1mg0%
Calcium 35mg4%
Iron 1mg6%
* Percent Daily Values are based on a 2000 calorie diet.

Share this:

  • Click to share on X (Opens in new window) X
  • Click to share on Facebook (Opens in new window) Facebook

Related

Filed Under: Cookies Tagged With: Cookies

Next Post: Citrus Chicken with Spring Vegetables »

Reader Interactions

Comments

  1. Alara Ravenclaw says

    September 26, 2012 at 1:32 am

    My 3yr son and I made these this evening. He loved every little bit that fell over the side of the bowl as I stirred and we shared the first warm cookies right out of the oven. Thank you for posting this recipe.

    Reply
  2. Diane P. says

    September 1, 2012 at 1:55 am

    My family has been making Monster Cookies for over 40 years. A family favorite!

    Reply
    • Janet@simplysogood says

      September 1, 2012 at 2:36 am

      They are crazy good. I can't stop eating them.

      Reply
  3. Steven Barton says

    June 28, 2012 at 6:46 am

    Looks like Ann Romney makes these same cookies

    Reply
  4. emarks says

    March 25, 2012 at 11:18 pm

    My husband's grandmother used to make monster cookies. Alas, she is not with us anymore. Cant wait to try them and pay homage to a great lady.

    Reply
    • Janet@simplysogood says

      March 26, 2012 at 1:14 am

      Oh that's sweet. My greatest recipes come from my grandmothers. They are the "tried and true" recipes that work every time. Thanks for sharing that.

      Reply
    • Elizabeth Downie says

      May 18, 2012 at 8:13 pm

      I made these cookies last weekend for two parties and they were INSANELY popular! thanks for the recipe! Everyone loved them! I even blogged about them. http://elizabethdownie.blogspot.com/2012/05/wednesday-thoughts_16.html

      Thanks for the recipe!

      Reply
    • Janet@simplysogood says

      May 18, 2012 at 10:19 pm

      Hahaha Thanks Elizabeth. I really appreciate you referring my link. I'm so happy the cookies were a success. They are completely addicting and I started freezing them so I wouldn't eat the entire batch. Then I realized how good they were frozen.

      Reply
  5. Janet@simplysogood says

    May 2, 2011 at 11:16 pm

    Hi Julie. Cookies are for sharing. Now I would have frozen them and ate them over the next few weeks. You did good! Way to go!

    Reply
  6. Julie says

    May 2, 2011 at 4:12 am

    this is what I made tonight and was able to share with loads of people as it makes a LOT of cookies. everyone was super happy as they are delicious. thanks for posting!

    Reply
  7. Bryan and Whitney says

    March 9, 2010 at 1:27 am

    I envision making these with the all-one-color M&M's you can buy now. Then they can really be monster cookies. Red for Elmo, blue for Cookie Monster, green for Oscar?

    Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Recipe Rating




This site uses Akismet to reduce spam. Learn how your comment data is processed.

Primary Sidebar

About Me

Janet Barton

Hi I'm Janet and this is where I share my delicious made-from-scratch seasonal recipes that I make at home for my family every day.

I believe cooking from scratch, using unprocessed and whole foods is an important part of healthy eating. My goal is to help you create amazing recipes by providing easy step-by-step photos and instructions.

Read More ยป

Trending Recipes

  • Lemonade and raspberry lemonade in tall glasses Old Fashioned Lemonade

  • Several chocolate drop cookies on white background Chocolate Drop Cookies

  • No-knead Crusty Bread in a Dutch oven No-knead Crusty Bread

  • pink iced heart sugar cookies Sour Cream Sugar Cookies with Cream Cheese Frosting

  • fried ice cream with spoonful taken out with honey and berries Fried Ice Cream

  • Grilled Pita Bread

  • Lemon Curd Ice Cream in bread pan with spoon Lemon Curd Ice Cream

  • Glass of almond milk with 2 gray striped straws on wood board with container of almond milk in background Quick Homemade Almond Milk

  • Large jar of spicy sweet bread and butter pickles with habanero peppers and onions. Spicy Sweet Refrigerator Pickles

  • chocolate glazed and glazed spudnuts stacked on cutting board with donut holes Spudnuts (Potato Doughnuts with Glaze)

Latest on Instagram

simplysogood

๐Ÿ‹ I teach you how to cook from scratch
๐Ÿ’ Follow simple step-by-step recipes
๐Ÿซ A lover of fresh, seasonal, & local ingredients

Fresh Herb Crockpot Turkey Breast with Brown Butte Fresh Herb Crockpot Turkey Breast with Brown Butter Pears is perfect for a smaller but still impressive Thanksgiving dinner. This easy recipe features a boneless turkey breast coated in homemade herb butter and "roasted" in a slow cooker, then served with a creamy cider herb gravy and sautรฉed browned butter pears....

https://www.simplysogood.com/fresh-herb-crockpot-turkey-breast-with-brown-butter-pears/
These strawberry rhubarb crumble bars will take yo These strawberry rhubarb crumble bars will take you straight to dessert paradise! ๐Ÿฅฐโ ๐Ÿ“
.โ 
Sweet-tart love in every bite, theyโ€™re the perfect treat for sunny days and cozy nights. Grab a bar and letโ€™s indulge in this fruity delight!โ 
.โ 
Give this recipe a try by clicking the link in my Instagram bio, where I post step-by-step photo instructions!
โ 
#rhubarbseason #homemadewithlove #dessertclub #strawberryrhubarb #strawberryrhubarbpie #strawberrycrumble #strawberryrhubarbcrumble
Baking up some homemade magic with my no-knead Lem Baking up some homemade magic with my no-knead Lemon Rosemary Gruyere bread!
โ€ข
This recipe is as easy as pie (or should I say bread?), bringing the flavors of tangy lemon, fragrant rosemary, and oh-so-melty Gruyere to life. ๐Ÿ‹๐Ÿž๐ŸŒฑ
โ€ข
Click the link in my bio to read through these helpful tips that will make your homemade bread a melt-in-your-mouth success!

#homemadebread #nokneadbread #gruyerebread #lemoncheesebread #cheesebread #homemadecheesebread
Starting the day off right with these indulgent no Starting the day off right with these indulgent no-knead brioche morning buns! ๐ŸคŽ Thereโ€™s just something about the buttery, flaky brioche and the sweet cinnamon swirl that makes mornings extra special.
โ€ข
The base dough recipe for no-knead brioche morning buns is a buttery no-knead dough that is refrigerated overnight. The chilled dough is very easy to roll, fill, slice, and bake.
โ€ข
So go ahead, treat yourself to something delicious and let these buns brighten up your day! 

The recipe link is in my Instagram bio!

#MorningTreats #BriocheLove #SweetIndulgence #cinnamonsugar #cinnamonandsugar #morningbuns
No fancy Ice Cream Maker โ€” no problem! ๐Ÿฆ๐Ÿจ No fancy Ice Cream Maker โ€” no problem! ๐Ÿฆ๐Ÿจ This no churn Strawberry Raspberry Ice Cream recipe is quick and easy to make without an ice cream maker in only 10 minutes.
โ€ข
Simply blend together a mix of frozen strawberries and raspberries with vanilla ice cream and raspberry sherbet for a rich, fruity, and creamy dessert that tastes homemade! ๐Ÿ“
โ€ข
Give this recipe a try by clicking the link in my Instagram bio, where I post step-by-step photo instructions!

#nochurnicecream #homemadeicecream #strawberryicecream #raspberryicecream #kidfriendlyrecipes #simplerecipes
These chewy peanut butter bars have been a family These chewy peanut butter bars have been a family favorite for decades! Peanut butter cookies layered with chocolate and a delicious peanut butter glaze! ๐Ÿฅœ๐Ÿซ
โ€ข
Trust me, your family will LOVE them!
โ€ข
Click the link in my bio to read through these helpful tips that will make your peanut butter bars a melt-in-your-mouth success!

#peanutbutterbars #peanutbuttercookies #pbbars #peanutbutterchocolate #peanutbutterlover #pbandchocolate
Start your day off on a flaky note with these skys Start your day off on a flaky note with these skyscraper buttermilk biscuits!
These melt-in-your-mouth treats are the perfect indulgence for breakfast, brunch, or anytime youโ€™re craving something buttery and delicious.
โ€ข
So go ahead, treat yourself to these heavenly delights and savor every flakey, buttery bite with me!
โ€ข
The recipe link is in my Instagram bio!

#butterybiscuits #homemadeisbest #breakfastindulgence #brunchgoals
Sharing my famous Lemon Curd Recipe! ๐Ÿ‹๐ŸŒผ๐Ÿ’› Sharing my famous Lemon Curd Recipe! ๐Ÿ‹๐ŸŒผ๐Ÿ’› The one that everyone says I should sell at farmers markets โ€” nah! Iโ€™ll just share the recipe with you all instead!
โ€ข
I love lemon curd, and use it for so many things!!
๐Ÿฐ Layered in a cake
๐Ÿฆ Swirled into ice cream
๐Ÿช Smashed between cookies
โ˜€๏ธ Filled inside scones

The possibilities are endless!! Give this recipe a try by clicking the link in my Instagram bio! And if youโ€™d like the recipes for my other lemon curd inspired goodies, theyโ€™re all linked in my Instagram stories!

#lemoncurd #lemoncurdcake #lemoncurdicecream #lemonicecream #lemondessert #lemoncurdrecipe
Have you ever tried an olive oil cake!? ๐Ÿฐ They Have you ever tried an olive oil cake!? ๐Ÿฐ They are incredibly soft and moist โ€” you gotta give it a try!
โ€ข
This citrus olive oil cake recipe features a tart lemon curd filling and a rich mascarpone frosting. Then we gently add flowers for beautiful decoration. It is an impressive looking and mouth-watering dessert thatโ€™s perfect for any special occasion! ๐Ÿ‹๐Ÿค๐ŸŒผ

Recipe is linked in my Instagram bio!

#oliveoilcake #oliveoilcakes #lemoncurdcake #mascarponefrosting #mascarponeicing
Follow on Instagram
  • Lemonade and raspberry lemonade in tall glasses Old Fashioned Lemonade posted on June 22, 2018

  • Several chocolate drop cookies on white background Chocolate Drop Cookies posted on May 20, 2024

  • No-knead Crusty Bread in a Dutch oven No-knead Crusty Bread posted on September 19, 2018

  • pink iced heart sugar cookies Sour Cream Sugar Cookies with Cream Cheese Frosting posted on February 8, 2025

  • fried ice cream with spoonful taken out with honey and berries Fried Ice Cream posted on May 4, 2025

  • Grilled Pita Bread posted on April 6, 2011

  • Lemon Curd Ice Cream in bread pan with spoon Lemon Curd Ice Cream posted on May 25, 2023

  • Glass of almond milk with 2 gray striped straws on wood board with container of almond milk in background Quick Homemade Almond Milk posted on June 3, 2020

  • Large jar of spicy sweet bread and butter pickles with habanero peppers and onions. Spicy Sweet Refrigerator Pickles posted on July 22, 2019

  • chocolate glazed and glazed spudnuts stacked on cutting board with donut holes Spudnuts (Potato Doughnuts with Glaze) posted on October 21, 2019

Footer

Featured on

The Daily Meal Logo The foodgawker-logo reddit Logo BuzzFeed Logo halfbaked Harvest Logo Browneyed Baker Logo FOOD52 Logo University of Washington Logo sheknows Logo

Copyright © 2025 Janet Barton
Privacy Policy

Rate This Recipe

Your vote:




A rating is required
A name is required
An email is required