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Frankenstein Rice Krispies Treats

Get into the Halloween spirit with these Frankenstein Rice Krispie Treats!
These easy cereal treats are a spooky twist on the classic treats with melted chocolate, icing and candy eyes.
They’ll be so much fun to serve at your Halloween party!

Thank goodness for homemade Rice Krispie Treats. When you need to make a dessert you know folks will love without a ton of time on your hands, soft rice krispie treats are a lifesaver.


I like my rice krispies soft, chewy and with lots of ooey gooey marshmallow ribbons when I pull them apart. This Frankenstein rice krispie Halloween treat is even better; they have a layer of dark chocolate on top!

With the help of that smooth chocolate, a few candy googly eyes and some green food coloring, we give the familiar treats a Frankenstein finish for Halloween. Technically I guess these should be called Frankenstein’s MONSTER Rice Krispie Treats, since Dr. Frankenstein was the name of the scientist, not the actual monster.

With apologies to the English literature teachers in the room, I think we’ll just call them Frankenstein Rice Krispie Treats. After all, Dr. Frankenstein would have gotten into a lot less trouble if he’d just made a batch of these treats in his lab instead!

This creative Halloween dessert would be a perfect addition to Halloween parties, for themed bake sales or class treats. Hosting a scary movie night? Make a batch of Halloween Rice Krispie Treats to pass around with your popcorn.

You’ll LOVE how they taste, how they look and how easy they are to make!

What do I need?

Here are the ingredients we used to make the green krispie treats:

Large or Mini Marshmallows

Rice Krispies cereal

Unsalted Butter

Marshmallow Fluff

Green food coloring – I like the gel dye.

For topping and decoration, you will also need:

Dark chocolate chips – The dark color looks best, but milk chocolate works too.

Vegetable oil

Large candy eyesYou can find these at most craft stores, or order them online.

Tootsie Rolls

Black or brown icing.

How do I make these monster treats?

If you’ve made Rice Krispie Treats before, you’ll be familiar with the method. Making these cute Frankenstein Rice Krispie Treats takes just a couple extra steps.

How to Make Halloween Rice Krispie Treats:

Melt butter with marshmallows and fluff on the stove in a large pot over medium heat.

Add a few drops of green food coloring to the melted marshmallows to get the shade of green you want.

Quickly stir in the rice krispie cereal. The green marshmallow mixture may be hard to mix with the rice Krispies. The texture is going to be very thick, it may help to use your hands rubbed with some butter with instead of a wooden spoon.

Press the treat mixture into the prepared pan. Let set for 15 minutes or until firm.

After cutting the treats into bars, it’s time to give them that Frankenstein monster makeover!

How to decorate Frankenstein Rice Krispie Treats:

Melt chocolate chips in a microwave safe bowl. Stir in vegetable oil. The oil helps the melted chocolate set up smooth and shiny.

Dip the top inch of each rice krispie treat into the melted chocolate for Frankenstien’s hair. Let the chocolate hair set.

Use a piping bag to place two dots of black frosting into the treats where you want the eyes to go or onto the back of each candy eye. Press candy eyeballs over the icing.

Create a mouth below the eyes with the same frosting. I used a toothpick for this step.

Cut your tootsie rolls in half. Use the icing to stick them to the sides of your monster heads.

And if you mess up and your monster looks wonky, it’s totally okay. Frankenstein Rice Krispies Treats aren’t supposed to look pretty! At least that’s my excuse when I make a mistake with my icing or the eyes aren’t perfectly even. They still taste delicious and everyone gets a kick out of the tootsie roll “bars” on the side of the heads.

Should these spooky treats be eaten warm or cold?

These crispy treats are best served at room temperature or slightly chilled. Too cold and they will become very hard. If you warm them up they will melt.

Can I make Rice Krispie Treats for Halloween ahead of time and freeze them?

Yes, you can make these easy Frankenstein rice krispie treats up to 3 months ahead of time and freeze them. Make sure to wrap them individually in parchment paper and store them in an airtight container that is freezer safe.
It’s important to note that the texture of the treats is much better when they are fresh.

How can I spread the rice krispy treat mix into the pan without it sticking to my fingers?

To prevent the mixture from sticking to your hands, I suggest dipping your hands in a bit of water, butter or oil before pressing it into the pan.

Can I make this in a round dish instead of a rectangle?

I don’t recommend making these treats in a round dish. It is best to use a rectangular or square dish so that your Frankenstein faces are square and not rounded on the edges!

Halloween Recipes

The best part of Halloween are all the TREATS! Yes, we all love the candy, but why not use the holiday as an excuse to make delicious homemade treats too?

I have plenty of other Halloween recipes you’ll love on the blog. You could save the leftover candy eyes from your Frankenstein treats and make these Halloween Monster Cookies! The candy eyes are the perfect finishing touch for Halloween Ghost Meringues too.

When I was a kid, homemade popcorn balls were a MUST on Halloween. I have a Peanut Butter Popcorn Balls Recipe that’s a hit with all ages. Inside Out Caramel Apples are another easy spin on a childhood favorite that you’ll want to make all autumn long as is this Halloween Snack Mix.

No Bake Desserts

Step away from the oven! You don’t need it to make a delicious dessert. From more rice krispie treat ideas to incredible cheesecake, we have plenty more easy no bake dessert recipes you’ll love.

After Halloween is over, use any leftover candy to make some Reese’s Peanut Butter Rice Krispies Treats or Butterfinger Rice Krispies Treats! These Cinnamon Rice Krispies Treats are another variation that’s perfect for fall or really any time of year.

If you need a new dessert recipe to make for Thanksgiving, I can’t sing the praises of No Bake Pumpkin Dream Bars enough. It’s like pumpkin pie and cheesecake in one! For the Nutella addicts in the family, I’ve got a crowd pleasing No-Bake Pumpkin Nutella Cheesecake recipe too.

Did you love those pink animal shaped cookies as a kid? Circus Animal Cookie Rice Krispie Treats have a hint of nostalgia with a pretty pop of pink color. I use pink sprinkles for those treats and red and blue ones for making Patriotic Rice Krispie Treat Stars.

Which one is your favorite? Try all of our favorite no bake recipes!

No Bake Cherry Hot Chocolate Cheesecake

No Bake Chocolate Peanut Butter Cornflake Cookies

Easy No Bake Oreo Pie

No Bake Peanut Butter S’Mores Cookies

No Bake Nutella Snickers Pie

No-Bake Blueberry Pie

No-Bake Rice Krispies Granola Bars

No-Bake Lemon Cheesecake

No-Bake Chocolate Bourbon Balls

Say BOO with a batch of these chewy, sweet, eye-catching Halloween Frankenstein Rice Krispie Treats!
They’re the perfect treats for your Halloween theme party.



Keep an eye out for more of my easy recipes each week!


Frankenstein Rice Krispies Treats

Get into the Halloween spirit with these Frankenstein Rice Krispie Treats! These easy cereal treats put a spooky twist on the classic treats with melted chocolate, icing and candy eyes and will be so much fun to serve at your Halloween party!
Course Dessert
Cuisine American
Keyword Frankenstein Rice Krispie Treats, Rice Krispie Treats
Prep Time 15 minutes minutes
Cook Time 15 minutes minutes
Total Time 30 minutes minutes
Servings 9 pieces
Calories 475kcal
Author Lynne Feifer


10 ounces large marshmallows can use mini marshmallows8 cups Rice Krispies cereal ¼ cup butter½ cup marshmallow fluff5-8 drops green food coloring1 cup dark chocolate chips1 tablespoon vegetable oil18 large candy eyes9 small Tootsie Rolls½ cup black or brown icing


 In a large skillet, melt butter over medium heat. Once butter is melted, add marshmallows and marshmallow fluff to the skillet. Stir constantly over medium-high heat until they are completely melted and smooth.
Add 5-8 drops of green food coloring. You can add more or less to achieve the desired color. Stir well.
In a large bowl, quickly combine the melted marshmallow mixture with the Rice Krispies cereal until very well mixed. The mixture will be thick, you’ll want to work quickly because it will start to set as it cools.
Press rice Krispy mix evenly into a 9×13 greased baking dish.
Place into refrigerator for at least 15 minutes or until firm. Once firm, remove them from the refrigerator and cut them into 3 X 4 -inch squares.
In a small microwavable safe-bowl, combine the dark chocolate chips with vegetable oil and mix until all chocolate chips are well coated in oil. Microwave for 30 second intervals, stirring between each until chocolate is melted and smooth. Do not overheat or mix with water, this will cause the chocolate to seize and be chunky.
Dip the top inch of each rice Krispy treat into the melted chocolate and place them on a greased cooling rack or another non-stick surface. It may take a few minutes for the chocolate to become firm, you can put them in a refrigerator to speed up this process.
Using your black or brown icing, make small dots where you want the eyes to be and stick candy eyes to the dots of icing. Use the same icing to add a mouth under the eyes.
Cut your tootsie rolls in half and use the icing to stick them to the sides of your Frankenstein heads.
Once the icing has set, serve and enjoy!


Serving: 1piece | Calories: 475kcal | Carbohydrates: 84g | Protein: 4g | Fat: 15g | Saturated Fat: 10g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 2g | Trans Fat: 0.2g | Cholesterol: 14mg | Sodium: 277mg | Potassium: 186mg | Fiber: 1g | Sugar: 50g | Vitamin A: 1819IU | Vitamin C: 16mg | Calcium: 78mg | Iron: 8mg

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