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Halloween Rice Krispie Treats

By: Cayla Gallagher
Published: March, 5 2025 Last Updated: March, 5 2025
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Sweet, chewy, and extra spooky, these Halloween Rice Krispie Treats are a fall favorite treat! They’re simple to make and a favorite with kids of all ages! 

Celebrate the best of the fall holiday season with these Rice Krispie Treats for Halloween! Featuring the classic combination of crispy puffed rice cereal, buttery melted marshmallows, vanilla, and your favorite holiday candies, these spooky Halloween Rice Krispies are a totally festive treat.

People of all ages will enjoy these spooky Halloween Rice Krispies, but perhaps best of all is how simple and easy they are to make. All you need are common ingredients, Halloween candies and sprinkles, and 10 minutes of cooking time. For more easy and tasty Halloween recipes, check out my Eyeball Mochi Skewers, Worm Cheesecake, and S’mores Marshmallow Ghost Tart.

Why This Halloween Rice Krispie Treats Recipe Is The Best 

  • Quick and Easy: In just simple four steps and 30 minutes, you’ll have a tasty and eerie celebratory snack the whole family will enjoy! 
  • Frightfully Festive: You’re in the right place if you’re looking for Halloween Rice Krispie treats ideas! With Halloween sprinkles, candy corn, and autumnal colored Reese’s Pieces, these dessert bars are fit for even the most spine-chilling parties! 
  • Easy to Adapt: Easily adjust this recipe to your desired theme or dietary needs, such as making them nut-free, dying the marshmallow mixture, or using extra creepy sprinkles. 

Ingredients

A top down view of the ingredients to make the Halloween rice crispy treats.
  • Rice Krispies Cereal – Also known as puffed rice, this cereal is the star of this recipe. The crispy, crackling rice is the perfect complement to the chewy marshmallow mixture. Use the name-brand cereal or a box of generic. 
  • Mini Marshmallows – These small marshmallows melt evenly and quickly. You can substitute large marshmallows chopped into quarters if needed. 
  • Butter – This ingredient adds a rich butteriness to the marshmallow mixture and helps to keep the treats from sticking to the pan. Use unsalted butter to best control the recipe’s seasoning, but salted can be used in a pinch. 
  • Vanilla Extract – For an elevated nutty vanilla finish to the Rice Krispie Halloween treats. For the best flavor, use pure vanilla extract if possible. 
  • Reese’s Pieces – With Halloween colors, this classic treat adds rich chocolate peanut butter flavor and an extra festive touch. 
  • Halloween Sprinkles – Choose your favorite blend. Many feature black, purple, light green, or orange jimmies. Others also contain eyeballs, spiders, or moon-shaped sprinkles. 
  • Candy Corn – For a pop of sweet maple flavor and a classic Halloween finish! 

Helpful Tools

  • Measuring Cups and Spoons
  • Large Pot
  • Rubber Spatula 
  • 9 x 13-Inch Baking Pan
  • Non-Stick Cooking Spray or Parchment Paper

How to Make Halloween Rice Krispies

A large glass mixing bowl contains mini marshmallows that have been coated in melted butter. A white spatula is also inside the bowl.
Melted marshmallows are dripping from a white spatula into a large glass mixing bowl.

Step 1: Make marshmallow mixture.

Melt the butter in a large pot over low heat. Add the mini marshmallows and mix until fully melted. Remove the pan from the heat and stir in the vanilla extract. 

Step 2: Stir in Rice Krispies.

Keeping the pan off the heat, add the Rice Krispies to the marshmallow mixture and mix until well combined. 

A large glass mixing bowls contains the completed rice krispie mixture, ready to pour into pans.

Step 3: Stir in candies.

Working quickly, add the Reese’s Pieces, Halloween sprinkles, and candy corn. Stir gently until well combined.

Step: Make treats and serve.

Pour the mixture into an 9 x 13-inch baking pan sprayed with nonstick cooking spray or lined with parchment paper. Press the Halloween Rice Krispie treats to flatten. Top the treats with extra candies if desired. Cool completely to room temperature before slicing and serving! 

The rice crispy treat mix has been pressed into a square pan.
A top down view of rice krispie treats that have been removed from their pan and sliced into 9 squares. They are on a black table.

Substitutions  

Rice Krispies – For a textural twist on this recipe, substitute corn flakes or Chex for puffed rice cereal. 

Butter – Make this recipe dairy-free by using coconut oil instead of butter. Raw or virgin oil provides the best flavor, but refined also works.

Halloween Candies – Use any variety of 2 ½ cups of your favorite Halloween candies and cookies. Some options are chopped KitKat bars, Halloween M&Ms, pumpkin candy corn, Halloween Oreos, and candy eyeballs.

Recipe Variations 

  • Nut-Free: To make these Rice Krispie Treats Halloween school party safe, use Halloween M&Ms instead of Reese Pieces. 
  • Extra Spook-tacular: Substitute candy eyeballs, skulls and bones sprinkles, pumpkin and bat sprinkles for the Halloween sprinkles, or press the Rice Krispie mixture into skull or pumpkin molds for extra spooky Rice Krispie treats.
  • Colored Treats: To enhance this treat’s seasonal flair, stir a few drops of orange or green food coloring into the marshmallow mixture. 
  • Chocolate Drizzle: For an extra chocolaty finish, melt 1 cup of chocolate chips with one teaspoon of canola oil on low heat in the microwave until smooth. Drizzle the syrup over the treats and let cool until hardened before serving!
  • Extra-Thick Treats: To make these Rice Krispie Halloween treats satisfyingly chewy and thick, press the mixture into an 8 x 8-inch baking pan. Cover with parchment paper and firmly press the mixture down until compressed. 

Tips for Making Perfect Halloween Rice Krispie Treats

  • Use a non-stick pot. This will help keep the Krispie mixture from sticking to the bottom and sides of it. If you don’t have a non-stick pot, mix the marshmallows and rice cereal in a mixing bowl sprayed with non-stick cooking spray. 
  • Stir the marshmallows while melting. Ensure the smoothest melting and creamiest marshmallow mixture by stirring them consistently as they melt.
  • Work quickly. The marshmallow mixture does set quickly as it cools, making the treats harder to mix. So, stir in the vanilla, cereal, and candies quickly as soon as the marshmallows are melted.
  • Gently stir in the candies. Folding them gently into the Rice Krispie mix prevents them from breaking or melting.
  • Keep the mixture from sticking to your hands. Marshmallows make the mixture extra sticky. For the easiest time, spray your hands with non-stick cooking spray or place parchment paper on the treats before pressing. 

Serving Suggestions 

Be the star of your child’s school Halloween party by making a tray of these easy Halloween Rice Krispie treats, individually package the festive goodies to hand out to trick-or-treaters, or make a batch for fall desserts and lunch-box treats! 

Storage Directions 

At room temperature – Cool the treats to room temperature before slicing and storing them in an airtight container for up to 5 days. 

In the freezer – These rice crispy treats, Halloween style can also be frozen in a freezer-safe container for up to 3 months. Defrost them at room temperature for 1 hour until softened.

FAQ

Can I use different flavored puffed rice cereal?

Yep! If you don’t want to use or don’t have plain puffed rice cereal, you can substitute Cocoa Krispies or Cinnamon Sugar Krispies. 

Can I make these the night before? 

You certainly can! Follow the recipe instructions as listed, placing the warm Halloween rice crispy treats on a wire cooling rack until at room temperature. Cut the treats into squares and move them to an airtight container, or cover the baking pan securely with aluminum foil. Store at room temperature overnight.

How do you package homemade rice crispy treats?

There are many ways to package these delicious treats! You can place them in clear or Halloween-themed treat bags, tying them up with Halloween ribbon. Or, package the cut bars in a cookie tin, placing parchment paper between the treats to keep them from sticking. Sprinkle in a few extra Halloween candies for an extra-special touch! 

Other Rice Krispie Treats Recipes to Try 

Two squares of oreo rice krispie treats stacked on a white table.

Cookies & Cream Rice Krispie Treats

Rice Krispie treats mixed with crushed oreos and melted chocolate. Multiple treats in one!

Rice Krispie Christmas Trees

Cute little trees rolled in sprinkles and dusted with powdered sugar “snow”.

a burger made from cereal treats on a white table with greenery in the background

Giant Hamburger Rice Krispie Treat

A hamburger to feed a crowd! Rice krispie treats have been shaped into a giant burger – the perfect centerpiece to a BBQ or summer party. Simply slice and serve!

A watermelon made of cereal treats has been sliced and placed on a white table

Giant Watermelon Rice Krispie Treat

We’ve turned a watermelon into Rice Krispies! Slice it into wedges like an actual watermelon for a cute, summery treat.

a rice krispie treat shark on a white table with a fish net and seashells

Giant Shark Rice Krispie Treat

Perfect for Shark Week or any sea-themed party!

Halloween Rice Krispie Treats

Sweet, chewy, and extra spooky, these Halloween Rice Krispie Treats are a fall favorite treat. They’re simple to make and a favorite with kids of all ages! Adjust the Halloween candies as desired to adapt to your theme or taste preferences, and let the treats cool to room temperature before enjoying!
Prep Time 20 minutes mins
Cook Time 10 minutes mins
Cooling Time 2 hours hrs
Total Time 2 hours hrs 30 minutes mins
Course dessert
Cuisine american
Servings 18 squares
Calories 195 kcal

Equipment

  • measuring spoons and cups
  • large pot
  • rubber spatula
  • 9×13 pan or two 8×8" pans

Ingredients

  • ¼ cup unsalted butter
  • 5 cups mini marshmallows
  • 1 tsp vanilla extract
  • 5 cups rice krispies cereal
  • 1 cup Reese’s peanut butter candies
  • ½ cup Halloween sprinkles
  • 1 cup candy corn
  • cooking spray

Instructions

  • Melt the butter in a pot over low heat. Add the mini marshmallows and mix until fully melted. Remove from the heat and add the vanilla extract.
  • Add the rice krispies and mix well. Then add the candies and sprinkles and mix well.
  • Generously spray two 8×8” dishes or one 9×13” baking dish with cooking spray. Pour the mixture into the dish(es) and press firmly to flatten. You can add extra candies at this point, if desired.
  • Cool completely at room temperature, then slice and enjoy!

Notes

Storage Directions
  • At room temperature – Cool the treats to room temperature before slicing and storing them in an airtight container for up to 5 days. 
  • In the freezer – These rice crispy treats, Halloween style can also be frozen in a freezer-safe container for up to 3 months. Defrost them at room temperature for 1 hour until softened.
 
Recipe Success Tips
  • Use a non-stick pot. This will help keep the Krispie mixture from sticking to the bottom and sides of it. If you don’t have a non-stick pot, mix the marshmallows and rice cereal in a mixing bowl sprayed with non-stick cooking spray. 
  • Stir the marshmallows while melting. Ensure the smoothest melting and creamiest marshmallow mixture by stirring them consistently as they melt.
  • Work quickly. The marshmallow mixture does set quickly as it cools, making the treats harder to mix. So, stir in the vanilla, cereal, and candies quickly as soon as the marshmallows are melted.
  • Gently stir in the candies. Folding them gently into the Rice Krispie mix prevents them from breaking or melting.
  • Keep the mixture from sticking to your hands. Marshmallows make the mixture extra sticky. For the easiest time, spray your hands with non-stick cooking spray or place parchment paper on the treats before pressing. 
 

Nutrition

Serving: 1squareCalories: 195kcalCarbohydrates: 37.6gProtein: 2.2gFat: 2.6gSaturated Fat: 1.6gCholesterol: 8mgSodium: 207mgPotassium: 33mgSugar: 12.7gCalcium: 1mgIron: 4mg
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Cayla Gallagher

Cayla Gallagher

Hi everyone! My name is Cayla Gallagher, and I’m the creator of Pankobunny!
 

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