Easy Brownie Mix Halloween Monster Cookies

Halloween is the perfect time for spooky treats, and these Easy Brownie Mix Halloween Monster Cookies are sure to be a hit! With just a box of brownie mix, some colorful Halloween candies, and a sprinkle of creativity, you’ll have a batch of festive, delicious cookies ready in no time. No tricks here, just all treats!

Whether you’re throwing a party, handing out goodies to trick-or-treaters, or just indulging in some Halloween fun at home, these Brownie Mix Halloween Monster Cookies are the ultimate sweet treat. Plus, they’re easy enough to whip up in just under 20 minutes—perfect for last-minute dessert planning.

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Why You’ll Love These Halloween Monster Cookies

These cookies check all the boxes for a quick and fun Halloween treat:

• Festive and Fun: Topped with M&Ms and candy eyeballs, these cookies look like little monsters! Perfect for getting into the Halloween spirit.
• Decadent and Chewy: The brownie mix gives these cookies a rich, fudgy texture that’s hard to resist. Every bite is chewy, chocolatey goodness.
• Quick and Easy: With just a handful of ingredients, these cookies come together in minutes. No complicated steps, just mix, bake, and enjoy!

Plus, you can personalize them with your favorite candies or decorations. They’re super versatile, which makes them a fun project to do with kids.

Ingredients You’ll Need

• 1 box brownie mix
• 1/4 cup vegetable oil
• 2 eggs
• 1/4 cup all-purpose flour
• 1 cup M&M candies (plus more for decorating)
• Candy eyeballs (for decoration)

Necessary Tools

• Large mixing bowl
• Cookie scoop (for even portioning)
• Parchment-lined baking sheet
• Cooling rack

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How to Make Halloween Monster Cookies

Step-by-Step Instructions

Preheat your oven to 325º F. This temperature is perfect for giving your cookies that gooey brownie center.

Mix your ingredients: In a large bowl, combine the brownie mix and all-purpose flour. Stir in the vegetable oil and eggs until just combined. You don’t want to overmix here.

Add the M&Ms: Fold in about 3/4 cup of M&M candies, leaving a small handful to press on top of the cookies before baking. This step ensures every bite has a nice mix of candies and chocolate.

Scoop the batter: Use a cookie scoop to portion out the dough onto a parchment-lined baking sheet. Leave about 2 inches of space between each cookie.

Decorate! Press a few candy eyeballs and extra M&Ms into the tops of each cookie. The candy eyeballs add a fun, “monster” look that makes these treats perfect for Halloween.

Bake: Place the cookies in the preheated oven and bake for 12-14 minutes. They’ll be soft but baked through, with the perfect chewy texture.

Cool: Let the cookies cool slightly on the baking sheet before transferring them to a cooling rack to cool completely. This helps the cookies firm up without falling apart.

Decorating Tips

Want to take these cookies to the next level? Here are a few ideas:

• Add other colorful candies, like Reese’s Pieces or Halloween-themed sprinkles.
• Use different sizes of candy eyeballs for a quirky, playful look.
• For extra gooey cookies, press a few chocolate chips or chunks into the tops before baking.

Storage Instructions

These cookies can be stored in an airtight container for up to five days at room temperature. If you’d like to keep them for longer, simply freeze them! They freeze well for up to 3 months—just be sure to place parchment paper between each cookie to prevent them from sticking together.

What to Serve with Halloween Monster Cookies

These cookies are delicious on their own, but they also pair perfectly with:

• A cold glass of milk (the classic cookie pairing!)
• A warm mug of hot chocolate on a chilly Halloween night
• Vanilla ice cream for an indulgent dessert

Ingredient Additions and Substitutions

• Mix-ins: Swap out the M&Ms for other candies like Reese’s Pieces, candy corn, or even chopped-up candy bars.
• Flour: If you want a slightly denser cookie, add an extra tablespoon of flour.
• Eyeballs: If you can’t find candy eyeballs, you can use mini marshmallows or just more colorful candies for decoration.

Frequently Asked Questions

Can I use a different brownie mix?
Yes! You can use any brownie mix you have on hand. Just adjust the recipe according to the package’s instructions if needed.

Can I make these cookies ahead of time?
Absolutely! You can make the dough a day ahead and store it in the fridge. When you’re ready to bake, let the dough sit at room temperature for about 10 minutes, then scoop and bake as usual.

How do I freeze these cookies?
To freeze, place cooled cookies in a single layer on a baking sheet. Once frozen, transfer them to a resealable freezer bag or container. When ready to eat, let them thaw at room temperature or pop them in the microwave for a few seconds.

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Can I double the recipe?
Yes, this recipe is easy to scale. Simply double all the ingredients, but be sure to bake in batches or use two cookie sheets for even cooking.

More Halloween Recipes You’ll Love

Looking for more Halloween-themed treats? Check out these festive favorites!

• Pumpkin-Shaped Sugar Cookies (No Pumpkin Needed!)
• Halloween Sugar Cookie Cake
• Chocolate Chip Halloween Cookies

Share Your Creations!

Did you make these cookies? I’d love to see how they turned out! Share your photos with us on Pinterest and be sure to tag me!

Nutritional Information

Yield: 24 cookies
Serving Size: 1 cookie

• Calories: 75
• Total Fat: 5g
• Saturated Fat: 1g
• Unsaturated Fat: 3g
• Cholesterol: 17mg
• Sodium: 15mg
• Carbohydrates: 8g
• Sugar: 6g
• Protein: 1g

These Easy Brownie Mix Halloween Monster Cookies are not just tasty—they’re a fun, festive way to celebrate Halloween. So grab your brownie mix, get creative with your candy decorations, and enjoy these delightfully spooky treats!

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