Soft and Chewy Monster Cookies Recipe

This post may contain affiliate links which means we receive a small commission at no cost to you when you make a purchase. As an Amazon Associate I earn from qualifying purchases.

How to make the best chewy monster cookies recipe. Easy to make. Decorated with M&M'S® candies, chocolate, and candy eyeballs. Fun, festive Halloween cookie for kids! This post has been sponsored by Mars Wrigley Confectionery US, LLC. All thoughts and opinions are my own.

Monster cookies made with loads of chocolate, including Fun Size M&M’S® and SNICKERS® candies from your local Walmart, are one of my favorite cookies. Partly because they remind me of a childhood neighbor and partly because they're just so soft and chewy.

When I was a kid, my neighbor would make the most delicious cookies filled with oatmeal, peanut butter, and chocolate. I mean, she loaded those puppies up with all kinds of sweet goodness.

Now as we get ready for the Halloween season, you can make a similar Halloween cookie recipe, using M&M'S® candies and SNICKERS® Minis. And since we're calling them monster cookies, why not add a spooky touch with candy eyeballs?

monster cookies recipe made with Mars Seasonal Halloween Candies like M&M'S and SNICKERS

I love candy eyeballs because they're a quick way to add personality to any project.

These cookies are especially fun to make with kids, and they're easy for that exact purpose. Halloween is already full of projects like costumes and parties; let's keep dessert easy.

Looking for more oatmeal cookies? You may also enjoy these oatmeal chocolate chip cookies.


If you’d rather skip all of my cooking tips, important cooking info for this recipe, and similar recipe ideas and get straight to the scrumptious monster cookies recipe, just scroll down to the bottom to find the printable recipe card.

stack of monster cookies made with halloween candy and candy eyeballs

While the staple ingredients in this cookie should remain unchanged, you can mix and match the sweeter ingredients.

Candies you may want to add to your monster cookies include:

  • chocolate chips
  • peanut butter chips
  • M&M'S® candies
  • PEANUT M&M'S candies
  • SNICKERS® Mini's
  • TWIX® bars
  • MILKY WAY® candy bars
  • 3 MUSKETEERS® candy bars
halloween candy in jack-o-lantern pumpkin bucket for monster cookies recipe


Grab your Halloween candy, including Fun Size M&M’S® and SNICKERS® candies, at Walmart in the Halloween candy aisle/s.

Mars Seasonal Halloween Candies used in monster cookies recipe Halloween cookies

I actually prefer shopping at Walmart for our Halloween treats because they have a wide variety of affordable options.

Mixed Minis Witch Bag from Mars Candy, perfect for making monster cookies for Halloween

Festive Fun Size M&M’S® and SNICKERS® candies from your local Walmart include their “All Chocolate” Variety Bag; the Mixed Minis Witch Bag (my favorite, I love the bag!); and M&M'S® Peanut Ghoul's Mix with Halloween colors like orange, purple, and green.


These cookies are really easy to make, but I do have a few tips to make the recipe flow more smoothly for you.

ingredients for monster cookies including Mars Halloween candy from Walmart
  • Use unsalted butter versus salted butter in your cookie dough. This way, it's a little easier to control the salty taste of your cookies.
  • Let the butter soften beforehand.
  • You can use creamy or crunchy peanut butter, but I highly recommend creamy just because of the texture it will give the cookies.
  • Sift together the dry ingredients, including flour, baking soda, and salt, before mixing them into the dough.
monster cookie dough for Halloween monster cookies
  • While I prefer using M&M'S® candies, you can also add in other candies. We added chopped SNICKERS Mini's into the second half of our dough, and they gave the cookies an even chewier texture. Yum!
  • Get into the spirit of Halloween by adding candy eyeballs to the cookies when they're hot, right out of the oven. Gently press the eyeballs into the top of the cookies, adding as many or as few as you want. This has a dual purpose… 1) Great for decorating Halloween cookies and 2) It allows you to gently press the cookie down into a flatter cookie while still warm.
decorating Halloween cookies like monster cookies with candy eyeballs on a cookie sheet

It's really not necessary for this cookie recipe. These cookies are already pretty chewy, and I prefer to just go ahead and bake the cookies while the dough is nice and soft.

stack of monster cookies with bite taken out of Halloween cookie


Yes, you can make them and freeze them. Just allow enough time for the cookies to thaw before serving time.

pile of Halloween monster cookies on a white plate

Pumpkin Sugar Cookies

Chewy Peanut Butter Cookies

Best Chocolate Chip Cookies Ever

More easy last minute ideas –>> 20+ Halloween treats – including Halloween brownies, party punch, cookies, no bake desserts, treats on a stick, Halloween cupcakes, and more!

And if it's a costume you need, why not make a DIY Garfield costume?

dunking monster cookies in milk in orange Fire King mug




Cookie Sheet

Cookie Scoop

Wire Rack – for cooling your cookies.

stack of monster cookies made with M&M'S and Halloween candy


If you love this monster cookies recipe as much as I do, please write a 5 star review and help me share the recipe on Facebook and Pinterest!

Soft and Chewy Monster Cookies Recipe


Be sure to follow me on social so you never miss a post!

Facebook | Pinterest | YouTube | Instagram | Twitter

Sign up to receive my newsletter, filled with delicious recipes and outdoor travel adventures, in your inbox:


Click on the video below to see how easy it is to make monster cookies for Halloween!

monster cookies with M&M'S candies on white marble countertop

Chewy Monster Cookies

How to make the best chewy monster cookies. Easy to make. Decorated with M&M's, chocolate, and candy eyeballs. Fun, festive Halloween cookie for kids! 
4.43 from 7 votes
Print Pin Rate
Course: Cookies & Bars, Desserts
Cuisine: American
Prep Time: 20 minutes
Cook Time: 10 minutes
Total Time: 30 minutes
Servings: 24 servings
Calories: 202kcal
Author: Mel Lockcuff



  • Pre-heat the oven to 375° F. 
  • Cream, or mix together, the butter and brown sugar.
  • Mix the peanut butter into the creamed mixture.
  • Add the egg and vanilla extract into the creamed mixture and mix well.
  • Whisk together the flour, baking soda, and salt. 
  • Add the dry ingredients to the wet ingredients, mixing well.
  • Mix the oats into the cookie dough.
  • Add the chocolate chips, peanut butter chips, M&M'S, and SNICKERS candies into the cookie dough, mixing everything in well.
  • Using a cookie scoop, drop cookies onto a cookie sheet.
  • Bake at 375° F for 8 to 10 minutes, or until the cookies are lightly golden and done.
  • While the cookies are still on the cookie sheet, gently press candy eyeballs into each cookie.
  • Remove the cookies to a wire rack to cool.
  • Serve with a mug of ice cold milk!


There's no need to chill the cookie dough.
*Gently pressing the candy eyeballs into the cookies will also allow you to gently press the cookies a bit flatter while they're still nice and warm.


Calories: 202kcal | Carbohydrates: 26g | Protein: 3g | Saturated Fat: 4g | Cholesterol: 11mg | Sodium: 124mg | Fiber: 1g | Sugar: 18g
Tried this Recipe? Tag us Today!Mention @mellockcuff or tag #aomrecipes!
Chewy Monster Cookies Recipe made with M&M'S candies
Soft and chewy monster cookies recipe made with M&M'S candies
Chewy monster cookies recipe made with M&M's candies and SNICKERS candies

8 thoughts on “Soft and Chewy Monster Cookies Recipe”

Leave a Comment

Recipe Rating

featured on ...


↑ Back To Top