Monster Cookies

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These are the Monster Cookies everyone loves! They have just the right ingredient for each and every person!

monster cookies

Hey cookie lovers! Get ready to dive into the ultimate treat that’s part cookie, part candy, and all deliciousness – monster cookies! These cookies are the stuff of dreams, packed with all the goodies you could ever want in a single bite.

Picture this: chewy oats, gooey chocolate chips, creamy peanut butter, and bursts of colorful M&M’s all mingling together in one epic cookie. Can you say yum?!

What makes monster cookies so awesome? Well, aside from their crazy good taste, they’re super easy to whip up. You don’t need any fancy ingredients or culinary skills – just a few pantry staples and a whole lot of love for cookies. And the best part? You can totally customize them to suit your taste buds. Want to throw in some nuts for extra crunch? Go for it. Feeling adventurous? How about adding a swirl of caramel or a sprinkle of sea salt on top? The possibilities are endless, my friends.

But let’s be real – the real magic of monster cookies is in sharing them with your favorite people. Whether you’re baking a batch for a weekend get-together or just treating yourself after a long day, these cookies have a way of bringing smiles to everyone’s faces. Enjoy them!!

What You’ll Need to Make Monster Cookies:

ingredients for monster cookies


  • Crunchy Peanut Butter
    • if you only have creamy in your pantry, use that. Don’t make a special trip and spend extra money just to make these.
  • Oats
    • I use old fashioned or quick, again whatever I have on hand. If you have a personal preference, go with that. My personal preference is not to spend more money 🙂
  • Vanilla
  • Butter
  • Eggs
  • Salt
  • Baking Soda
  • Brown sugar (dark or light will work so just use whichever kind you have)
  • White Sugar


  • Chocolate Chips
  • Peanut Butter Chips
  • M&M’s

How to Make Monster Cookies:

add ingredients to a mixing bowl

Start by adding the peanut butter, oats, sugars (brown and white), eggs, salt, baking soda, and butter into a big mixing bowl. Mix with an electric mixer until well-combined.

mix it with an electric mixer, add add-ins

Now toss in your mix-ins: chocolate chips, peanut butter chips, M&M’s, and the kitchen sink. Mix all that in until combined.

scoop out cookies onto cookie sheet

Spray some cookie sheets with cooking spray and then make golfball sized rounds of cookie dough and put them about two inches or so apart.

**If your cookie sheets are starting to look a little tired and you are looking for an upgrade, check out these Baking Sheets from Caraway. They are so easy to use and such amazing quality – you’ll never look back!**

add M&Ms on top

Add a couple M&Ms to the top of each cookie – for aesthetics and flavor!

cool monster cookies

Bake at 350 for 10-12 minutes. Allow to cool on sheets for about five minutes, then remove and allow to cool completely.

monster cookies

Or eat them warm because that is extra delicious.

Enjoy these cookies! Seriously everyone loves them, I know you will too!


  • Place them in an airtight container or zip-top bag to keep them from drying out or becoming stale. Let the cookies cool completely before storing them to prevent any of the chocolate from melting on the bag.
  • For longer storage, you can freeze monster cookies in a single layer on a baking sheet before transferring them to a freezer-safe container. When you’re ready to enjoy them, just thaw them at room temperature or give them a quick zap in the microwave for that fresh-from-the-oven taste. 


Can I add other mix-ins into my monster cookies?

When it comes to monster cookies, the sky’s the limit when it comes to mix-ins! Here are some fun and flavorful additions you can throw into your monster cookie batter to take them to the next level:

  • Nuts: Chop up some walnuts, pecans, almonds, or cashews for added crunch and texture.
  • Coconut: Sweetened shredded coconut adds a tropical twist and a chewy bite to your cookies.
  • Dried Fruit: Try adding dried cranberries, cherries, raisins, or apricots for bursts of natural sweetness and tanginess.
  • Pretzels: Crushed pretzel pieces can add a salty crunch that contrasts beautifully with the sweetness of the cookie dough.
  • Butterscotch Chips: Swap out some of the chocolate chips for butterscotch chips for a rich, caramel-like flavor.
  • Candy Bars: Chop up your favorite candy bars – like Snickers, Reese’s Peanut Butter Cups, or Kit Kats – and fold them into the dough for extra decadence.
  • Toffee Bits: Bits of toffee add a buttery, caramel flavor and a satisfying crunch to your cookies.
  • Peanut Butter Chips: Double down on the peanut butter goodness by adding peanut butter chips along with the creamy peanut butter in the dough.
  • White Chocolate Chips: For a sweeter, creamier twist, mix in some white chocolate chips along with the semi-sweet or dark chocolate ones.
  • Pumpkin Seeds: Add a nutty flavor and a bit of crunch by tossing in some roasted pumpkin seeds (pepitas).

Feel free to mix and match these mix-ins to create your own unique monster cookie masterpiece. The only limit is your imagination!

More Cookie Recipes You’ll Love

Chocolate Chocolate Chip Cookies

Chocolate Chip Cookies

Peanut Butter Cookies

M&M Cookies

monster cookies

Monster Cookies

These are The Monster Cookies Everyone Loves because they have just the right ingredient for each and every person yet they are also easy to make!
Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes
Course: Dessert
Cuisine: American
Keyword: cookies
Servings: 4
Calories: 502kcal


  • 1 + 1/2 cups chunky peanut butter
  • 1 cup dark brown sugar
  • 1 cup white sugar
  • 1 stick softened butter
  • 3 eggs
  • 1 tsp vanilla
  • 4 cups oats quick
  • 2 1/2 tsp baking soda
  • 1/2 teaspoon salt
  • 1 cup semi sweet or milk chocolate chips
  • 1 cup m and m minis
  • 1 cup peanut butter chips


  • In a large mixing bowl combine peanut butter, sugars, butter, eggs, oats, baking soda, vanilla and salt. Mix well with an electric mixer.
  • Add in all other ingredients and mix again until well blended.
  • Form dough into golfball size cookies and place two inches apart on greased cookie sheets.
  • Bake at 350 for 10-12 minutes. Let cool 5 minutes before removing from pan. Enjoy!


Calories: 502kcal
Tried this recipe?Mention @southernplate or tag #southernplate!

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  1. I bought a red dish tub just for big batch cookies and I am ashamed to say I haven’t made them yet! I am inspired to do that soon now that I have seen this post again

  2. Great recipe! I made the base but was lacking in add-ins. Had a bag of mixed snack size candy bars. Buttered a knife and chopped them up for the add-ins. Know exactly what I’m doing with extra candy from Halloween 🙂

  3. I found your recipe and made them a couple of weeks ago with my daughter. My whole family loved them so much that I made them for my oldest daughters birthday party! My husband and I agree that they are the best cookies we have ever had. The only difference I did was I only baked them for 7 minutes. We love our cookies soft and chewy and it was perfect! Thanks!

  4. I just got done making these and I’m not sure what I did wrong but they spread out way too much during cooking. The first pan ended up as one “mono-cookie” so I made the next pan a bit smaller and spaced them further apart. They still had that flat, melted look, not the thick cookies that are in the picture and have gooey parts in the middle. I am at a higher altitude, would that have anything to do with it? I am so disappointed because yours look so good! Help please!

    1. Hey Whitney! I’m so sorry that happened to you and I know how disappointing it is (I’m a veteran of that same incident with many a cookie over the years). It sounds like what happens when you grease cookie sheets for a cookie recipe that does not require greased sheets. This recipe does require greased sheets and that is what works for me, but I am wondering if maybe you are using some really good non stick sheets and then greasing them on top of that could have been the culprit. Holler back and we’ll see if we can put our brains together on this!

  5. Is it odd that the first thing I thought of was “Where the heck did she get the big jug of vanilla?? And can I find one?”

  6. Oh, Mary! I never heard of such a thing as too much chocolate….lol! These are great cookies, Christie. I’m in WV now but family is all around Jacksonville and Piedmont. I miss home!

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