Chewy Monster Cookies

Chewy Monster Cookies by Deliciously Yum!

Let’s talk memories. I have always been able to remember things pretty well. It rages all the way from retaining weird information like random people’s birthdays to important things like which recipes I’ll be sharing here. I have list upon list in my head and should definitely focus on writing things down more frequently. Yeah, I’ll get on that.

Anyhoo, no matter what you’re able to retain, one thing most people tend to store really well are memories related to food. It goes without saying that this form of memory doesn’t require much practice or much of anything really. They’re basically built in, which means they must be suuuper important. Even though I feel slightly overwhelmed from time to time and am embarrassed to admit how much of my current thoughts and recollections are consumed by food, I wouldn’t have it any other way.

It brought about these fabulous cookies after all.

Chewy Monster Cookies get the recipe at

It definitely was love at first bite. I had these cookies for the first time at my friend, Aimee’s house.

She whipped up a batch of these just in time as we started to settle in to watch one of our favorite shows. It was probably The Biggest Loser or something. ‘Cause that what you do, isn’t it? Eating ice cream or another treat while watching the contestants working out and monitoring their food intake. It’s the mental support that counts, ya’ll.

Monster Cookies by Deliciously Yum!

That was about 2 years ago. It’s the only time I had them and a couple of days ago my taste buds and memories started to crave said cookie. It’s for the blog I told myself. And yes, it definitely was. Well, partially. I just had to share them with you because I just like each and every one of you too much to not do so, true story. But I can’t deny that it brought a huge smile to my face as well. It was a good day. And since today is Friday, which is already a great thing in and of itself, I am convinced that making these cookies would set it over the top. Just sayin’.

Monster Cookies by Deliciously Yum!

The recipe comes from a lady named Karla. It was passed on to my friend when she got married to her husband Eric. We don’t know who Karla is, but she sure knows how to make a super chewy and scrumptious cookie. Thanks, Karla!

Monster Cookies by Deliciously Yum!

These cookies are perfect for cleaning out your cupboards and getting rid of those small amounts of chocolate chips that you may have leftover from making your last batch of cookies. If you don’t have something on hand like m&m’s or mini chocolate chips or even peanut butter, feel free to adjust with whatever you do have on hand. A combination of different kinds of chocolate chips or even almond butter would work beautifully. You really can’t go wrong.

Monster Cookies get the recipe at

I really wish we had some of these leftover. But hey, I may just go ahead and make another batch today. As should you. It’ll be one of the best things you do today!

Chewy Monster Cookies by Deliciously Yum!

Hope you all have a lovely weekend! I’ll get to watch my hubby ref his first Basketball game and after that, we’ll be rooting on our local Hokey team. Looking forward to a sports-filled Saturday and relaxing Sunday!

Chewy Monster Cookies
Yields 36
Chewy Monster Cookies combine everything you could possibly want in a cookie - chocolate, peanut butter, oatmeal and m&m's... simply perfect.
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  1. 1 cup granulated sugar
  2. 1 cup brown sugar
  3. 1/2 cup butter, softened
  4. 12 ounces creamy peanut butter
  5. 3 eggs
  6. 1 teaspoon vanilla
  7. 3 1/2 cups oatmeal
  8. 2 teaspoons baking soda
  9. 1 cup flour
  10. 1 cup mini chocolate chips
  11. 3/4 cup m&m's
  1. Line a baking sheet with parchment paper and preheat oven to 350 degrees F.
  2. 1. Cream together granulated sugar, brown sugar, butter and peanut butter. Mix until well combined and then add one egg at-a-time to the mixture until all eggs are thoroughly incorporated. Add vanilla and give it a good stir.
  3. 2. With the mixer running on low speed, add oatmeal, baking soda and flour until dough forms. Remove bowl from mixer and using a rubber spatula incorporate chocolate chips and m&m's.
  4. 3. Place dough on prepared baking sheet with the help of a cookie scoop or about 1 1/2 to 2 tablespoons of dough per cookie. Place in the oven and bake until lightly browned, about 7-9 minutes. Enjoy with a cold glass of milk.
  1. Chewy Monster Cookies will keep up to 1 week in your cookie jar or up to 6 weeks in an airtight container in the freezer.
Deliciously Yum!


  1. Kathi, Jenna stirred up a batch of Monster Cookies after school. She had not seen your blog so it was just a coincidence. First time she has ever made them – and she used butterscotch chips as no chocolate chips in the house.

  2. I stumbled across your blog while googling Monster Cookie recipes… needless to say I can’t wait to try this scrumptious looking cookie and all the other nummy looking recipes on here! We both live in MN, so we both know how nasty this winter has been & that we’re still trying to get Mother Nature to roll spring out already, but looking at some of the holiday treats and goodies on here ALMOST has me wishing it was the Holidays again:) I can wait! but I’m excited to make the soft salted caramels, bon bons and noughet bars for friends & family. So happy to have found this sight. You have a new follower!

    • Hi Lane, thank you so much for stopping by and saying hi. I am so glad to have you :). Your comment made me laugh. When it comes to making sweet treats, there’s nothing like the holidays, but I am more than happy to wait a few more months :). Hope you enjoy the recipes you can find here. High-fiving you for being a fellow Minnesotan!

  3. Hi, Kathi!

    Quick question- I’m going to try my hand at making these lovely cookies, but I’m running into a time crunch for an event and was thinking of making up the dough in advance and sticking it in the fridge for an hour or two until I can get to baking them. I’m wondering if you’ve ever refrigerated the dough and what, if anything, the effect has been on the overall cookies. Thanks!

    • Hi Mara,
      I have never tried making these ahead of time and leaving them in the fridge for a couple of hours, but I don’t think it should be a problem. I’d say give it a go. You may need to bake them for another 2-3 minutes or so – just keep an eye on them toward the end of the baking time and leave them in a bit longer if they look like they need it. Hope that helps! I’d love to know how it goes!

  4. I substituted coconut oil for the butter and added 1/3 cup shredded coconut.
    I didn’t have any M&Ms so increased choc chips to 1 3/4 cups and added some sprinkles on top before I baked, just for fun;)
    So yummy! Can’t wait for the kids to get home from school….

    • Love it! I might have to make these cookies with your substitutions next time!! Thanks for letting me know, Kelly and have a delicious night 😉

  5. When it says oatmeal do you mean quick cooking oats? Sounds delish!! Thanks

  6. Stephanie Midkiff says:

    Hi. I found your recipe while searching for a Monster cookie recipe that one of my roommates employees requested. He was asking about something with oatmeal, m&m’s and nutella. Do you think it would be about the same if I substituted Nutella in place of the peanut butter? I have not really baked with Nutella and I don’t want to mess up these wonderful sounding cookies. Thank you 🙂

  7. I feel these cookies just crumbled! Way too dry! Great flavor but next time I will not use the 1 cup flour.

  8. Best Monster cookies I have ever had. With 6 picky eaters everyone gave it a 5 star and more. Not sure why the post above had crumbling problems, but ours were soft and packed with flavor. Maybe over cooking the cookies was an issue. I let mine bake for 8 minutes and let cool on pan until they set up a bit. Delicious!!!!!!!

  9. I agree that the cookies turned out fantastic!!

  10. Best cookies! Love tried and true recipes, so appreciate all the effort you put into your recipes. Fellow Minnesotan as well. Thank you!

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