This Rice Krispie Treat Cake is everything you love about classic marshmallow treats - but stacked, frosted, and decorated like a celebration-worthy cake. It's chewy, buttery, sweet, and layered with fluffy vanilla frosting for the ultimate no-bake party dessert. If you need something fun, fast, and guaranteed to impress, this is it.
Rice Krispie Treat Cake RECIPE ESSENTIALS
🍽️ Course: Dessert
⏱️ Cooking Time: 15 minutes + 45 minutes cooling
🍴 Servings: 12 slices
🧄 Flavor Profile: Buttery, marshmallow-sweet, creamy vanilla
🍚 Best Served With: Ice cream or a glass of cold milk
🧊 Make Ahead?: Yes, up to 2 days in advance
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This cake takes me right back to childhood bake sales and birthday parties. It has the nostalgic chew of traditional rice krispie treats but feels special enough to replace a traditional birthday cake. The best part? No oven required.
This Rice Krispie Treat Cake was inspired by our peanut butter Oreo Rice Krispie Treats and pairs perfectly with vanilla ice cream, coconut brownies, or a cold glass of milk.
Why You Will Love This Recipe
- Easy and fuss free: No baking required, minimal ingredients, and perfect when you need a quick dessert like our browned butter Rice Krispie treats.
- Perfect for parties: Slices beautifully, feeds a crowd, and makes a fun alternative to traditional cake.
- Easy to customize: Kid-friendly and simple to decorate with different frostings, colors, and toppings.
Ingredients
You only need pantry staples and store-bought frosting to make this fun layered dessert.
- Salted Butter: Adds richness and balances sweetness.
- Mini Marshmallows: Create the gooey structure that binds everything together.
- Rice Krispies Cereal: Gives the signature chewy-crisp texture.
- Vanilla Frosting: Turns simple treats into a layered cake.
- Rainbow Sprinkles: Adds color and celebration vibes.
See the recipe card below for exact ingredient amounts, nutritional information, and detailed instructions.
Variations
- Chocolate & cookies: Use chocolate frosting, ganache, mini chocolate chips, crushed Oreos, cocoa cereal, mint chocolate, or cookies-and-cream variations.
- Fun party versions: Make birthday cake, funfetti, colorful fruity cereal, themed frosting colors, or a taller three-layer celebration cake.
- Rich flavor upgrades: Try cream cheese frosting, peanut butter, salted caramel, crushed candy bars, or s'mores-inspired add-ins.
- Fruity & fresh twists: Add strawberry shortcake flavors with freeze-dried strawberries or brighten it with lemon zest frosting.
How to Make Rice Krispie Treat Cake
This cake comes together in just a few simple steps. Melt, mix, press, cool, stack, and frost. That's it!
Step 1: Prepare marshmallow mixture. Melt your butter in a large pot over medium heat. Add marshmallows and continue stirring until melted.
Step 2: Add Rice Krispies. Remove your pot from heat. Fold in the cereal until evenly coated.
Step 3: Press into round pans. Spread your rice krispie mixture into two 8-inch cake pans and let them cool on the counter for 45 minutes.
Step 4: Build cake. Carefully run a knife around the edges of the pans and gently remove the Rice Krispie treat layers. Place one layer on a cake stand or serving plate and spread a generous layer of frosting over the top. Add the second layer, then frost the top and sides of the cake evenly. Finish with rainbow sprinkles, then slice, serve, and enjoy with our Oreo frappuccino!
Expert Tips
- Store it properly: Keep Rice Krispie Treat Cake covered at room temperature or in the refrigerator for up to 5 days, or freeze slices for up to 2 months. Assemble up to 24 hours ahead if needed.
- Protect the texture: Use fresh marshmallows, melt them gently over medium heat, and don't press the cereal too firmly so the cake stays soft and chewy.
- Frost successfully: Let the layers cool completely before frosting so it doesn't melt or slide.
- Make cleanup easier: Lightly grease pans, tools, and parchment, then use a lightly greased serrated knife for clean slices.
If you love recipes like this, you may also enjoy samoa Rice Krispie treats.
Serving Suggestions
- Ice cream pairing: Serve with vanilla, strawberry crunch ice cream or chocolate strawberry ice cream.
- Party dessert: Add birthday candles for a fun cake alternative.
- Sweet drizzle: Top with chocolate or caramel sauce.
- Party platter: Slice into smaller squares for dessert trays with white chocolate covered strawberries.
- Fun finishing touch: Add edible glitter, whipped cream, or fresh berries.
Rice Krispie Treat Cake Recipe FAQs
Regular marshmallows work best for structure.
Yes, for a sheet cake version.
Usually from removing too early or pressing too firmly.
Overheating marshmallows or pressing too firmly can cause this.
More Rice Krispie Recipes
If you love chewy marshmallow treats and easy no-bake desserts, here are some fun recipes to try next.
If you try this recipe and love it please leave a star rating in the recipe card below or even better, drop a review in the comment section. I always appreciate your feedback. Be sure to follow along with me on Facebook, Pinterest, and YouTube for more easy recipes!
Rice Krispie Treat Cake
Equipment
Ingredients
- ½ cup salted butter
- 4 cups mini marshmallows
- 6 cups rice krispies
- 2 tub (16 oz) vanilla frosting
- ½ cup rainbow sprinkles
- cooking spray or butter
Instructions
- Melt your butter in a large pot over medium heat. Add marshmallows and continue stirring until melted.
- Remove the pot from the heat and fold in the cereal until evenly coated.
- Divide the mixture in half, then spread it evenly between two 8-inch cake pans. Let the layers cool at room temperature for about 45 minutes before removing them from the pans.
- Lightly grease your cake stand or serving plate with a thin layer of butter or cooking spray before placing the first Rice Krispie layer on top to help prevent sticking.
- Carefully run a knife around the edges of the pans and gently remove the Rice Krispie treat layers. Place one layer on a cake stand or serving plate and spread a generous layer of frosting over the top. Add the second layer, then frost the top and sides of the cake evenly. Finish with rainbow sprinkles, then slice, serve, and enjoy!
- Top your cake with the rainbow sprinkles. Slice, serve, and enjoy!
Notes
- Store it properly: Keep Rice Krispie Treat Cake covered at room temperature (for soft texture) or in the refrigerator (cake will harden) for up to 5 days, or freeze slices for up to 2 months. Assemble up to 24 hours ahead if needed and come to room temperature to serve.
- Protect the texture: Use fresh marshmallows, melt them gently over medium heat, and don't press the cereal too firmly so the cake stays soft and chewy.
- Frost successfully: Let the layers cool completely before frosting so it doesn't melt or slide.
- Make cleanup easier: Lightly grease pans, tools, and parchment, then use a lightly greased serrated knife for clean slices.
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