Frankenstein Rice Krispie Treats for Halloween

Name: Frankenstein Rice Krispie Treats
Prep time: 20 min
Cook time: 10 min
Total time: 30 min
Ingredients: 3 tablespoon butter; 6 cups rice cereal; 4 cups marshmallows; ¼ cup unsalted butter, room temp; ¾ cup shortening; ½ teaspoon vanilla extract; ½ teaspoon almond extract; 1 pinch kosher salt; 4 cups confectioners powdered sugar; 3-4 tablespoon water, room temp; green gel food coloring; black cookie decorating icing ((I used Betty Crocker Brand)); candy eyeballs; assorted sprinkles; graham crackers

Published: Sep 20, 2020 · Modified: Feb 28, 2023 by Emily · This post may contain affiliate links · 36 Comments

These Halloween Frankenstein Rice Krispie Treats are easy to make and so fun to eat! They are perfect for a party, a school treat, or just a fun family dessert.

Need an easy treat for Halloween? I've got the perfect recipe for you…Frankenstein Rice Krispie Treats!!!
These are easy to make and so fun to decorate. Everyone is going to love this fun dessert!

And, if you love rice cereal treats as much as I do, check out my other holiday recipes for Shamrock Rice Krispie Treats, Rice Krispie Treat Stars, Reindeer Rice Krispie Treats, Santa Hat Rice Krispie Treats.

CHECK OUT MY WEB STORY HERE!

Ingredients Needed for Frankenstein Halloween Treats

butter
marshmallows
puffed rice cereal
vegetable shortening
vanilla extract
salt
powdered confectioners sugar
green food coloring
black decorating frosting
eyeball candy
graham crackers
sprinkles

How to Create Frankenstein Rice Krispie Treats

First, make some rice krispie treats. Press the treats firmly into the baking pan to ensure they are nice and packed and allow them to cool.

Remove the treats from the pan and cut it into rectangles. I trimmed off the curved edges first to get nice straight lines.

Frost each rectangle with a thick layer of frosting and place in the fridge for 15 minutes to firm. This makes decorating easier.

rectangles rice krispie treats with green buttercream frosting

Create the hair and mouth with black decorating frosting. Add eye candies, sprinkles, and any other decoration you would like. For the studs on the side of the face, cut up small squares of the graham crackers and push them into the side of the frosting. Get creative!

frankenstein rice krispie treats in a row

How to Make Thick Buttercream Frosting

This is my go-to buttercream frosting for cookies, cakes, and treats when I need a substantial frosting that will hold up well and create a thick layer. I learned this recipe from The Icing Artist who has awesome tutorials and recipes.

Place the butter and shortening in a stand mixer and cream together on medium speed. Mix in vanilla and salt.
Begin to add powdered sugar one cup at a time, mixing on low speed until combined then med-high speed for a minute or so each time. After each cup addition, add a tablespoon of cold water to get your desired consistency.
Add gel food coloring to the desired color.

side view of frosted rice krispie rectangle

Decorating Tools and Tips for Halloween Rice Krispie Treats

To make the candy eyes look bloodshot, use an edible marker to draw on them.
Packaged decorating icing is an inexpensive and easy way to decorate without making another frosting. It dries shiny and thick which is perfect for decoration. Black is also a hard color to achieve when making your own frosting, so why not let someone else do it?!
A wet finger can smooth out imperfections in the frosting.
I used different sprinkles I had on hand to make eyebrows and noses on some of the Frankensteins. I thought it was fun to make different faces and expressions.
To get a nice, packed rice cereal treat, spray your hands with non-stick spray and press firmly all over the pan. Be careful, the mixture is hot at first so wait for it to cool slightly.
These treats are best at room temperature, but I would suggest storing them in the fridge until you are ready to serve them. Allow them to sit at room temperature for about 10 minutes to allow them to soften before enjoying.

cookie icing, red edible marker, candy eyeballs

More Fun Dessert Recipes to Try