
These monster eye rice krispie treats are a playful, spooky snack perfect for Halloween parties or a fun children’s birthday celebration. With just a handful of pantry staples and a splash of green gel food coloring, these treats come alive with a delightfully gooey texture and whimsical appearance that kids adore. I remember one chilly Halloween afternoon when my daughter and I, both in costume, crafted these together—every time I see them, it brings back that magic and laughter-filled day.
I first made these when we wanted something easy and exciting for my daughter’s birthday. Now they are a staple for any spooky occasion or movie night.
Ingredients
- Unsalted butter: three tablespoons creates a smooth base and prevents sticking choose high quality for better flavor
- Mini marshmallows: one 10 ounce package melt easily and form the gooey texture fresh marshmallows work best
- Pure vanilla extract: one half teaspoon adds subtle warmth and depth to the sweet mixture
- Marshmallow creme: half a cup boosts chewiness and adds silkiness a key to extra goo
- Salt: one eighth teaspoon balances sweetness and enhances all flavors
- Green food coloring gel: one quarter teaspoon or adjust for vibrant monster green gel type offers richer color than liquid
- Rice Krispies: six cups toasted rice cereal provides crunch and that classic treat texture lightly toasted cereal is ideal
- Candy eyeballs: thirty six pieces two per treat for the spooky effect select eyeballs that are firm and large enough to stick securely
- Cooking oil spray: to grease your hands prevents the mixture from sticking and makes rolling easier
Instructions
- Melt the Butter:
- In a large pot set over mediumlow heat, gently melt the unsalted butter without letting it brown. This creates a smooth, even base for the marshmallows and keeps the flavor pure and buttery.
- Incorporate Marshmallows and Creme:
- Add the mini marshmallows gradually, stirring constantly as they soften and mostly melt. Then stir in the marshmallow creme, mixing thoroughly until the mixture is silky and uniform, ensuring a perfectly gooey consistency.
- Flavor and Tint the Mixture:
- Stir in the vanilla extract and salt briskly to blend the flavors. Add green gel food coloring a small amount at a time, mixing well until you reach the desired deep monster green shade. Gradual addition avoids streaks and ensures even color.
- Combine with Rice Krispies:
- Remove the pot from heat before gently folding in the toasted Rice Krispies cereal. Fold quickly and carefully so that every bit of cereal is coated evenly, but avoid stirring too aggressively to keep the cereal crisp.
- Shape the Monster ‘Eyeballs’:
- Spray your hands generously with cooking oil spray to prevent sticking. Scoop portions of the mixture and roll into approximately 18 balls, aiming for smooth spheres about the size of golf balls. Shape swiftly because the mixture will firm as it cools.
- Add Candy Eyes:
- While the balls are still warm and tacky, press two candy eyeballs into each ball. The warmth helps them adhere securely so they won’t slide off later.
- Cool and Serve:
- Place the finished balls on a parchment lined tray and allow them to cool completely. Cooling sets the shape and texture so they hold firm when served or packaged.

The candy eyeballs are my favorite part. One Halloween, my daughter insisted on placing the eyes herself, and the laughter as she carefully positioned each one is one of my sweetest memories in the kitchen.
Storage Tips
Store these treats in an airtight container at room temperature to keep them soft and chewy for up to three days. Avoid refrigeration unless your kitchen is very hot, as it can dry them out. If freezing, wrap tightly in plastic wrap and place in a sealed bag, then thaw at room temperature before serving.
Ingredient Substitutions
Unsalted butter can be substituted with refined coconut oil for a dairyfree alternative that still yields great texture. Green gel food coloring may be replaced by culinary matcha powder for a natural, earthy green color and subtle flavor. Marshmallow creme can be swapped for honey or maple syrup to add a slightly different sweetness and stickiness but expect a softer treat overall.
Serving Suggestions
Add a drop or two of flavored extracts like orange or mint to the melted marshmallow for seasonal or personal twists. Dip the bottoms of the shaped balls into melted chocolate to give an extra flair and festive contrast to the green. Pair with a themed green punch or other monster inspired snacks to complete a party spread.

These monster eye Rice Krispie treats are an easy, festive snack that kids love. They’re perfect for parties and make wonderful memories when you decorate them together.
Your Recipe Questions Answered
- → How can I prevent the mixture from sticking to my hands?
Spray your hands with cooking oil or lightly dampen them with water before shaping to keep the mixture from sticking and achieve smooth balls.
- → What’s the best way to melt marshmallows without overcooking?
Melt marshmallows over medium-low heat, stirring constantly until smooth and pourable to avoid dryness or stiffness.
- → How do I make sure the candy eyes stay attached?
Press candy eyes into the warm, tacky treats right after shaping to ensure they adhere securely as the mixture cools.
- → Can these treats be prepared in advance?
Yes, prepare up to two days ahead and store in an airtight container at room temperature to keep them fresh and chewy.
- → Are gluten-free rice cereal options suitable?
Certified gluten-free crisped rice cereals work well as a substitute to accommodate gluten sensitivities without affecting texture.