Rice Krispie treats are usually simple, but this monster version turns up the volume—more marshmallows, more cereal, more everything. I like to think of it as a rebellious twist on a childhood favorite, perfect for those days when you need a little chaos in the kitchen. It’s a messy, sticky process, but that’s part of the fun.
What really makes these treats special is the chunky, chewy texture that comes from pressing them into a thick slab. They’re not dainty or refined—they’re big, bold, and unapologetically sweet. Plus, they’re a great way to clear out the leftover marshmallows and cereal in your pantry.
Why These Monster Treats Keep Calling Me Back
They’re chaotic, nostalgic, and ridiculously satisfying. Every batch feels like a small rebellion, a messy adventure in the kitchen. Plus, they’re a guaranteed hit at parties or just a midnight snack—big, chewy, and unapologetically fun. No matter how many times I make them, I always find a new way to tweak the chunkiness or add a surprise ingredient.
Ingredient Breakdown for Monster Rice Krispie Treats
- Marshmallows: The gooey heart of the treat—use a big bag for extra stretch and chew.
- Butter: Adds richness and helps everything melt smoothly; unsalted is best to control salt levels.
- Rice Krispies cereal: The crunchy base—go for the classic version or try a toasted variety for extra flavor.
- Extras (optional): Chopped nuts, chocolate chips, or candies can add a fun crunch or sweetness.
- Spray or butter: For greasing the pan, preventing sticking and making clean-up easier.
Tools and Equipment for Monster Rice Krispie Treats
- Large saucepan: Melting butter and marshmallows smoothly.
- Rubber spatula: Stirring and mixing ingredients evenly.
- 9×13-inch pan: Holding the mixture as it sets.
- Wax paper or buttered spatula: Pressing the mixture evenly into the pan.
- Knife or pizza cutter: Cutting into chunky squares once cooled.
How to Make Monster Rice Krispie Treats from Scratch
Step 1: Gather your ingredients and equipment before you start. It’s chaos otherwise.
Step 2: Melt butter in a large saucepan over medium heat, about 5 minutes, until it’s bubbly and fragrant.
Step 3: Add marshmallows and stir constantly until they melt completely, about 3-4 minutes; the mixture should be smooth and oozy.
Step 4: Pour the marshmallow mixture over the Rice Krispies in a giant bowl. Mix quickly, but carefully, to coat all the cereal evenly.
Step 5: Press the mixture into a greased 9×13-inch pan using a buttered spatula or wax paper. Don’t pack it too tight—keep it a little loose for chewiness.
Step 6: Let it rest at room temperature for at least 30 minutes. The treats should firm up but stay chewy and sticky.
Step 7: Cut into chunky squares and serve. These treats are best when still slightly warm and gooey.
Cooking Checkpoints and Tips for Monster Rice Krispie Treats
- The marshmallow mixture should be completely melted and smooth before mixing with cereal.
- Press the mixture firmly but gently into the pan—don’t overpack or it’ll be too dense.
- The treats are ready when they hold together but are still slightly sticky to the touch.
- Let the treats cool at room temperature—don’t rush the set or they’ll be crumbly.
Common Mistakes and How to Fix Them
- Overheating marshmallows, causing them to seize and become hard.? Use low to medium heat when melting marshmallows to prevent burning.
- Packing the treats too tightly, making them dense and crumbly.? Press the mixture firmly but not too tight to keep it chewy.
- Cutting while still warm, causing them to fall apart.? Allow the treats to cool fully before cutting.
- Uneven coating or cereal sticking to the pan.? Mix quickly and efficiently to coat cereal evenly.

Monster Rice Krispie Treats
Ingredients
Equipment
Method
- Gather all your ingredients and equipment before you start; this chaos-free setup makes the process smoother.

- Melt the butter in a large saucepan over medium heat until it’s bubbly and fragrant, about 2-3 minutes.

- Add the marshmallows to the melted butter and stir constantly with a rubber spatula until they melt completely, creating a smooth, oozy mixture, about 3-4 minutes.

- Pour the marshmallow mixture over the Rice Krispies cereal in a large bowl. Quickly and carefully stir to coat all the cereal evenly—this mixture will be sticky and glossy.

- Grease your 9x13-inch pan with spray or butter to prevent sticking.

- Transfer the mixture into the prepared pan, then press it down evenly with a buttered spatula or a piece of wax paper. Don’t pack it too tight—leave it a little loose for that chewy texture.

- Let the treats sit at room temperature for at least 30 minutes to firm up and develop that sticky, chewy consistency.

- Once cooled, use a knife or pizza cutter to cut into chunky squares. These treats are best enjoyed slightly warm and gooey.

- Serve your monster Rice Krispie treats and enjoy their big, bold, chewy goodness!


I’m Daniel Whitaker, the founder and voice behind Micromanaging Flavor. Born and raised in the United States, my love for cooking began at a young age when I realized how much joy a perfectly balanced dish could bring to the table.