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Easy Frankenstein Rice Krispie Treats

How to make the cutest Frankenstein Rice Krispie treats, decorated in 3 simple steps. Soft and chewy, super easy Halloween party snacks kids will love!
5 from 3 votes
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Course: Rice Krispie Treats
Cuisine: American
Prep Time: 30 minutes
Cook Time: 20 minutes
Cooling Time: 10 minutes
Total Time: 1 hour
Servings: 12
Calories: 263kcal
Author: Mel Lockcuff



  • Melt the butter in a large sauce pot or Dutch oven on the stovetop.
  • Stir the vanilla extract and salt into the butter.
  • Add the mini marshmallows to the melted butter mixture, stirring until the marshmallows have fully melted.*
  • Then add green food coloring until you have the shade of green you want.
  • Remove the mixture from the heat, and quickly stir in the Rice Krispies cereal.
  • Spread the Rice Krispies mixture into the greased baking dish and let them cool.
  • Cut the entire pan of treats into squares or at least, as close to square shaped treats as you can.
  • Using the tip* that comes with or goes on your icing, add hair to your Frankenstein with the black icing. Just do a zig-zag along the hairline, and outline around the top of the head. Then fill in with black icing.
  • Also, add a small smile or mouth, as well as a piece of stitching to one cheek.
  • Add candy eyes, setting them in place with a tiny bit of icing on the back.
  • And that's it! They're ready to serve at your Halloween party!


*Quick Tip: Make sure you use salted butter over margarine. Butter will give your Halloween cereal treats a richer flavor and texture.
*You can use pretty much any crisp rice cereal, whether you choose to use the original Rice Krispies cereal, a generic brand, or a store brand.
*You can use big or mini marshmallows, but I highly recommend mini marshmallows, since they'll be a lot quicker and easier to melt.
*If you decide to make your own icing or use decorating icing instead of cookie icing, you can use Wilton Tip #5 to pipe the hair, mouth, and stitches onto your Frankenstein.
Soft Rice Krispie treats are one of those desserts that after 2 or 3 days will start to harden up and be either extra chewy or hard as a rock.
Two ways to ensure that you have the softest treats possible are by using fresh ingredients, namely marshmallows and cereal, and by cooking the marshmallow mixture on low to medium heat.
Also, use lots of marshmallows. If you're using 6 cups of cereal (as in the case with this recipe), you'll want the same amount of marshmallows, so a 1:1 ratio.
And finally, another way to keep them soft is to store them properly. It's important to store your treats in an airtight container or sealed plastic bag. You'll probably want to eat them within the first 2 or 3 days.
You can if you need to. And then get them out with at least half an hour to thaw before serving.
Be sure when freezing them, though, that you again store them in an airtight container or freezer bag. And you might even put wax paper or parchment paper between the layers of treats so they don't stick together.
Also, I recommend not decorating them until you get them back out of the freezer and are ready to serve them.


Serving: 1g | Calories: 263kcal | Carbohydrates: 50g | Protein: 2g | Fat: 7g | Saturated Fat: 4g | Polyunsaturated Fat: 3g | Cholesterol: 13mg | Sodium: 198mg | Sugar: 29g
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