Easy No-Bake Halloween Frankenstein Rice Krispie Treats

These easy no-bake Halloween Frankenstein rice Krispie treats are such a fun idea for a holiday treat. Kids and adults will find these not only delicious but so adorable. Homemade rice Krispies are soft, chewy, and buttery – but store-bought rice Krispie treats can be used as a substitute. These dessert bars are dipped in melted white chocolate that has been dyed green to give that classic Frankenstein look. They are then dipped in brown sprinkles to create the hair, topped with candy eyes, and decorate with melted chocolate stiches!

Highlights of the no-bake Halloween dessert and why you will love them:

• No-bake recipe: these easy treats don’t need any time to bake in the oven, you just need a stove top or burner to mix up the rice Krispie’s themselves. Everything else can be done in the microwave or doesn’t require any heat.
• Easy to decorate: these are very simple to decorate, they just need to be dipped in melted chocolate and then into a bowl of sprinkles. Candy eyes can be placed on and if desired, stitches and other designs can be added on with melted chocolate. Kids can help decorate their own bars or serve as a craft for everyone to make their very own bar!
• Great for school events or parties: kids will love bringing these to their school Halloween party or bringing to a friends. They look difficult to make but are secretly so simple and will be the talk of the party!
• Budget friendly: all of these simple ingredients are inexpensive, therefore making this dessert simple and budget friendly. No expensive Halloween candy needed – make sure to find some candy eyes in the baking aisles or online, if you don’t have candy eyes – melted chocolate can be used.
• Shortcuts available: use store-bought rice Krispie treats for an easy shortcut! Green melting wafers can also be a substitute instead of melting white chocolate and dying it with green food coloring. Grab a small tube of brown or black decorating icing to use for the stitches if you don’t want to melt and pipe chocolate.

If you are loving these Halloween themed rice Krispies, try these Copycat Starbucks Marshmallow Dream Rice Krispies! Decorate these bars for many different occasions including birthdays, Christmas, Easter, or Valentines day! Get creative with different colors of chocolate, sprinkles, and holiday themed candy. This is a great way to involve kids and it’s a fun way to transform the traditional rice Krispie treat into a spooky season delight for your next treat party.

Ingredient Notes & Ingredient Substitutions:

Read below to find some substitutions to ingredients I used in this easy recipe –

• Unsalted Butter: softened butter works best and melts quickly. Do not substitute margarine or cooking oils.
• Corn syrup: light corn syrup creates a light, chewy consistency and holds the bars together. Honey can be a substitute if needed, but may change the texture slightly.
• Pure vanilla extract: use homemade or store-bought vanilla extract.
• Marshmallows: large or mini marshmallows will work, as they melt down completely.
• Rice cereal: a must for the classic dessert. Store-bought, pre-made rice Krispie treats can be a substitute to homemade bars.
• Chocolate: use white chocolate chips for the body and semi-sweet chocolate chips for decorating. Green candy melts can be a substitute to dying the white chocolate.
• Coconut oil: this keeps the chocolate nice and smooth while melting in the microwave. If you have ever melted chocolate in the microwave and had it seize up, that is because the fat separated. Add in extra fat such as coconut oil or butter helps keep the mixture smooth and clump free.
• Little food coloring: use green food coloring to dye the white chocolate.
• Candy eyes: find these at any local craft store, in the baking aisle of your local grocery store, or order a bag online. These edible eyeballs stay good for what feels like forever and can add a fun holiday spin to any dessert or treat.
• Festive sprinkles: I like to use black or brown sprinkles to match the classic Frankenstein hair. You can use any type of sprinkle, you will need about 1/2 a cups worth to dip all of the bars.

How to make the Easy No-Bake Halloween Frankenstein Rice Krispie Treats (with step by step instructions):

Let’s talk a little about how to make these rice Krispies (The printable instructions are in the recipe card below.)

Quick overview:

• Combine butter and and corn syrup in a large Dutch oven.
• Heat until bubbly, add in vanilla and marshmallows. Stir until melted.
• Mix in rice cereal and transfer to a 9×13 pan.
• Slice rice Krispies, dip in colored white chocolate and sprinkles.
• Add candy eyes and decorate with melted chocolate.
• Let cool completely and enjoy.

1: In a large Dutch oven, combine butter and corn syrup. Heat over medium-high heat until combined and bubbly. Add in vanilla extract and marshmallows. Stir to combine.

2. Continue heating, stirring often, until marshmallows melt completely.

3. Mix in rice cereal.

4. Transfer rice Krispie mixture to a greased or parchment lined 9×13 pan. Press down firmly with your hands or a rubber spatula, a little cooking spray can help this process. Focus on the edges and corners so the bars stay together curing decorating.

5. Let rice Krispies set for 20-30 minutes and slice into 10 even rectangles.

6. In a small microwave-safe bowl combine white chocolate and coconut oil. Microwave in 30 second intervals until melted, stirring each time. Add in green food coloring to get your desired shade of green.

7. Dip the top half of the bar into the melted chocolate, allow the excess chocolate to drip off, place on a sheet of parchment paper to dry. Repeat with the remaining bars.

8. While the chocolate dried, but before it is completely dry, dip part of the top half into a bowl of sprinkles to create the hair. Place back onto the parchment, add on the candy eyes, and allow to finish drying. Repeat the same process with the remaining bars.

9. Melt semi-sweet chocolate chips in a small bowl in 30 second increments until smooth. Transfer to a small piping bag or zip top sandwich bag. Snip a very small corner of the bag and use to draw stitches or or designs onto the bars. Allow to cool completely.

Tools I used for this easy no-bake dessert recipe:

Pyrex Mixing Bowl Set – I love this set of nesting bowls. I use them for everything, Pyrex glass does not break easily so you can trust on these bowls for years, plus they come in 3 useful sizes and can be stacked!

Rubber Spatula – a must have! I like these because they don’t come apart so I don’t have to worry about water getting inside the spatula and causing mold.

USA Pan 9×13 inch Baking Pan – another USA Pan product I love! The corners of my bars and cakes never stick and I love the square edges this pan creates. I have had my pan for years and it’s still in perfect condition.

Parchment Paper – parchment paper is such a versatile item to keep on hand. I use this to line my pans after greasing and to place the rice Krispie’s on while decorating.

These spooky treats will be everyone’s new go to and they are a no bake treat! They look so fun and festive at Halloween parties laid out on a platter or serving tray. Or if serving at a Halloween party with kids, create a bar for everyone to decorate their own bars. You could start with fully dipped bars and let kids add mouths and stitches or have kids do the whole thing, start to finish!

If you like these Easy No-Bake Halloween Frankenstein Rice Krispie Treats, you’ll love these other easy desserts…

Easy Spooky Halloween Pudding Dirt Cups Recipe (more cute Halloween treats)

Chocolate Peanut Butter Blondies (loaded with peanut butter cups!)

Copycat Starbucks Marshmallow Dream Rice Krispies

Fun & Easy Halloween Scotcharoos (another fun Halloween treat that is no bake)

Short Cut Chocolate Chip Oreo Cookie Brownie Bars

One-Bowl Peanut Butter Chocolate Chip Oatmeal Blondies

Recipe FAQs:

How to keep Rice Krispies form getting hard?

Cooking the marshmallow mixture over medium heat on the stove instead of high will help keep the mixture soft, don’t rush melting the butter and marshmallows. Also, using fresh marshmallows can help – old marshmallows are most likely already a bit hard. Add enough marshmallows, we don’t want to skimp here, this is the only thing adding moisture into the bars. ,

Can I make Rice Krispies the night before?

Yes! Rice Krispies can be made the day or night before. To keep bars fresh while storing – keep them in an airtight Ziploc bag or glass container at room temperature, layers of parchment paper can be added in between bars to keep them from sticking together.

How many cups of cereal in a box of Rice Krispies?

There are about 10-12 cups of rice Krispies cereal in a box. If making two batches, I would be safe and grab two boxes to have on hand.

Other easy Halloween dessert recipes could be candy corn pudding cups, Halloween rocky road slices, chocolate bark, Halloween dirt cake, or monster popcorn balls! All of these cute Halloween treats can be made the night ahead and taken to classroom parties or served on trick-or-treat night.

More Droll-Worthy No Bake Halloween Recipes:

Looking for something that is no-bake but doesn’t skimp on taste or presentation? Try these other simple treat, perfect for Halloween that don’t require baking:

• Fun & Easy Halloween Scotcharoos – topped with simple white chocolate ghosts!
• Easy Spooky Halloween Pudding Dirt Cups Recipe – candy eyes are added to peanut butter cups for a cute design