These Monster Rice Krispie Treats are fun and colorful snacks that will light up any party! Made with marshmallows, rice cereal, and a bit of playful magic, they are just so tasty.
You’ll love how easy they are to make. Just melt, mix, and shape them into monster forms. I like to let the kids help out—it’s always a blast to see their funny monster creations! 🐉
Key Ingredients & Substitutions
Rice Krispies Cereal: This crispy cereal is what creates the texture in our treats. If you can’t find Rice Krispies, try using another brand of puffed rice or even gluten-free rice cereal for a similar crunch.
Mini Marshmallows: They melt easily and provide sweetness. If you need a non-dairy option, look for vegan marshmallows. They work just as well in this recipe!
Unsalted Butter: I recommend unsalted butter for better control over the flavor. If you’re looking for dairy-free or vegan options, you can use coconut oil or a plant-based butter substitute.
Food Coloring: Choose food coloring based on your color preferences. Gel food coloring is great for vibrant colors. If you’re seeking natural alternatives, try using beet juice or turmeric for coloring.
Candy Eyeballs: These fun decorations can often be found at craft stores or in the baking aisle. If you’re in a pinch, use chocolate chips or cut small pieces of black licorice instead!
What’s the Best Way to Shape & Decorate the Treats?
Shaping Monster Rice Krispie Treats requires a little finesse to make sure they stick together. Here’s the trick:
- Always grease your hands lightly with butter before pressing the mixture; this will help keep it from sticking to your fingers.
- When pressing the mixture into the pan, use a spatula or the back of a spoon to ensure even distribution and compression.
- Cut the treats while they’re still warm but not completely set. This helps avoid crumbling and makes cleaner cuts.
For decorating, have fun with layout and design! Encourage the little ones to create different monsters with various colored marshmallows and eye arrangements. It’s all about creativity!

Monster Rice Krispie Treats
Ingredients You’ll Need:
- 6 cups Rice Krispies cereal
- 4 cups mini marshmallows
- 3 tablespoons unsalted butter
- Food coloring (purple, green, orange, blue – your choice)
- Large candy eyeballs (varied sizes)
- Black decorating gel or melted chocolate (for mouths)
- Non-stick cooking spray or butter (for greasing pan)
How Much Time Will You Need?
This recipe will take about 20 minutes of prep and cooking time. You’ll just need some cooling time afterward while they set, which usually takes about 30 minutes. A quick and fun treat to whip up!
Step-by-Step Instructions:
1. Preparing Your Workspace:
Start by lightly greasing a 9×13-inch pan with butter or non-stick cooking spray. This will help your Monster Rice Krispie Treats come out easily later on!
2. Melting the Ingredients:
In a large pot over low heat, melt the butter. Once the butter is melted, add in the mini marshmallows. Stir the marshmallows continuously until they are completely melted and smooth. This is where the magic happens!
3. Adding Color:
Divide the melted marshmallow mixture into four separate bowls. Add a few drops of food coloring into each bowl and stir until the colors are fully blended. You can make fun monsters with any color combination you desire!
4. Mixing in the Rice Krispies:
For each colored marshmallow mixture, gently fold in about 1 ½ cups of Rice Krispies cereal until everything is well coated. The mixture should be sticky and colorful!
5. Shaping the Treats:
Press the colorful cereal mixture firmly into the prepared pan. You can layer the colors or create blocks with different sections. Make sure it’s evenly spread to help them hold together.
6. Cutting and Decorating:
Once the mixture has cooled slightly (but isn’t fully set), use a buttered knife or spatula to cut the treats into equal squares. Then, it’s time to have fun! Decorate each square with candy eyeballs by gently pressing them on top. Use black decorating gel or melted chocolate to draw silly mouths or other monster features.
7. Letting Them Set:
Allow the treats to cool completely so they hold their shape and decorations. This usually takes about 30 minutes. Then, you’re ready to serve!
Enjoy your vibrant, goofy little monsters—perfect for Halloween or any fun occasion! They’re sure to be a hit wherever you take them!

Can I Use Different Types of Cereal?
Absolutely! While Rice Krispies are traditional, you can use any puffed cereal like Corn Pops or even gluten-free options to customize your treats!
How Should I Store Leftovers?
Store any leftover Monster Rice Krispie Treats in an airtight container at room temperature for up to 3 days. If they’re stored properly, they should stay soft and chewy!
Can I Make These Treats Vegan?
Yes! Simply substitute the unsalted butter with coconut oil or a plant-based butter, and use vegan marshmallows. You’ll still get that delicious, gooey texture!
What If I Don’t Have Candy Eyeballs?
No worries! You can get creative with your decorations. Use chocolate chips for eyes, mini marshmallows, or even pieces of dried fruit to add personality to your monster treats!


