Monster Eye Rice Krispie Treats

30 min | easy

Green Rice Krispie treat balls with two candy eyeballs each, arranged on a pale green plate on a rustic white wooden table.

Recipe by Eunice Published Jul 16, 2025

Prep Time	Cook Time	Total Time
20 min	10 min	30 min

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Introduction

These Monster Eye Rice Krispie Treats take the classic gooey, buttery bar you love and turn it into a playful, spooky bite.

They’re perfect for Halloween parties, school treats, or any monster‑themed birthday spread.

The marshmallow creme makes them extra soft and chewy, while the green tint and candy eyeballs give them a fun, creepy look.

Seven bright green Rice Krispie treat balls shaped like monsters, each topped with two candy eyeballs, arranged on a light green plate; a small jack-o’-lantern decoration and autumn leaves are blurred in the background.

How to Make Monster Eye Rice Krispie Treats

Prep mode (keeps screen active)

Prepare pan and ingredients

Line a 9x13-inch pan with parchment or lightly grease it, then set it aside.
Measure the Rice Krispies cereal into a large mixing bowl so it is ready to go.
Have the candy eyeballs unwrapped and a small bowl of cooking spray ready for your hands.
Melt butter and marshmallows

In a large pot, melt the butter over medium-low heat, stirring often so it does not brown.
Add the mini marshmallows and marshmallow creme, and stir until completely smooth and melted.
Stir in the vanilla and salt until evenly combined.

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Tint the marshmallow mixture green

Remove the pot from the heat, then add a few drops of green gel food coloring.
Stir well, adding more gel as needed, until the color is a bright monster green.
Work fairly quickly so the marshmallow mixture stays warm and fluid.
Combine with cereal

Pour the green marshmallow mixture over the Rice Krispies cereal in the large bowl.
Use a spatula to gently fold and turn the cereal until every piece is coated and no dry spots remain.
If the bowl feels too full, work in two batches so mixing stays easy and even.
Let mixture cool slightly

Let the mixture cool for 3 to 5 minutes, until it is warm but not hot to the touch.
This short rest makes shaping easier and helps protect your hands from heat.

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Shape the monster balls

Lightly coat your hands with cooking spray, then scoop about 1⁄4 cup of mixture for each treat.
Roll each scoop into a firm ball, pressing gently so it holds together without crushing the cereal.
You should get about 18 balls, but size can be adjusted to your preference.
Add candy eyes

While the balls are still warm, gently press two candy eyeballs into each ball so they stick.
If any eyeballs loosen, add a tiny dab of warm marshmallow from the pot to help glue them.
Turn the eyeballs in different directions for extra silly or spooky expressions.
Cool, serve, and store

Set the finished treats on a parchment-lined sheet pan and let them cool completely.
Serve the monster eye treats the same day for the softest, chewiest texture.
Store any leftovers in an airtight container at room temperature for up to three days, layering with parchment if stacking.

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Nine bright green Rice Krispie treat balls shaped like monsters sit on a pale green plate, each topped with two candy eyeballs; a small bowl of marshmallow creme is blurred in the background on a white wooden table.

Substitutions

Replace marshmallow creme with extra mini marshmallows: If you cannot find marshmallow creme, use an extra 1 cup of mini marshmallows instead, which keeps the treats just as gooey and sweet while simplifying the ingredient list.
Use another crisp rice cereal instead of Rice Krispies: Any plain crisp rice cereal works in place of Rice Krispies and gives the same light, crunchy texture without changing the fun green color.
DIY candy eyes with white and mini chocolate chips: If you cannot find candy eyeballs, press in white chocolate chips upside down, then dot the tips with mini chocolate chips for homemade eyes that look playful and add a creamy chocolate bite.

Green Rice Krispie treat balls shaped like monsters, each with two candy eyeballs, cooling on a parchment-lined baking sheet; a bowl of the green cereal mixture sits at left.

Tips

Use fresh marshmallows for soft treats: Old or dried marshmallows melt poorly and make the mixture stiff, so always use a fresh, squishy bag for the best chewy texture.
Do not overheat the marshmallow mixture: Keep the heat at medium-low and remove the pot as soon as everything is melted, because boiling marshmallows leads to hard, dry treats.
Grease hands and tools generously: Lightly coat your hands, spatula, and even the measuring cup with cooking spray so the sticky mixture releases easily and shapes smoothly.
Shape while warm but not hot: Follow that short cooling window closely, since very hot mixture is hard to handle but fully cooled mixture becomes crumbly and tougher to press into neat balls.
Pack the balls gently: Press the cereal mixture just enough so the balls hold together, because overpacking crushes the cereal and makes the texture dense instead of light.

Nutrition Facts ^*

Energy	100	kcal
Protein	1	g
Total Fat	2	g
Carbohydrates	20	g
Dietary Fiber	0	g

^* Approximate, per serving.
Data source: USDA FoodData Central.

FAQ

Why did my monster eye treats turn out hard instead of soft and chewy?: They usually turn hard if the marshmallow mixture gets overheated or if you pack the cereal too tightly when shaping. Melt the butter and marshmallows only until smooth, without letting them bubble. When forming the balls, press gently so the cereal stays airy and does not compact too much.
The mixture is too sticky to roll into balls, what should I do?: Let the coated cereal sit for another minute or two so it cools slightly, which reduces stickiness. Grease your hands again with cooking spray and work in smaller portions. If it is still very loose, you can sprinkle in a small handful of extra cereal and fold it through.
Can I make these Rice Krispie treats ahead of time for a party?: Yes, you can make them up to a day in advance and store them in an airtight container at room temperature. For the softest bite, avoid refrigerating them, since the fridge can dry them out. If you want them extra fresh, mix the base earlier and shape the balls closer to serving time.
Can I use liquid food coloring instead of gel?: You can, but you will need more drops to reach a strong green shade, which can slightly thin the marshmallow mixture. Add it gradually and stop once the color looks bright enough. If the mixture seems looser, just be a bit quicker when shaping the balls so they hold together well.
How do I keep the candy eyes from falling off the treats?: Press the eyes in while the balls are still warm and slightly sticky so they can sink in a little. If some still pop off, dab the back with a bit of warm melted marshmallow or white chocolate and press again. Let that set before stacking the treats in a container.