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–+ servings
A slice of Rice Krispie Treat Cake with vanilla frosting and rainbow sprinkles
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Rice Krispie Treat Cake

Make the best Rice Krispie Treat Cake with chewy marshmallow cereal layers, creamy frosting, and colorful sprinkles. This easy no-bake dessert is perfect for birthdays, parties, and feeding a crowd.
Prep Time10 minutes
Cooling Time45 minutes
Total Time55 minutes
Servings: 8
Calories: 305kcal
Author: Karin and Ken

Ingredients

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.

Nutrition

Calories: 305kcal | Carbohydrates: 48g | Protein: 2g | Fat: 13g | Saturated Fat: 8g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 0.5g | Cholesterol: 31mg | Sodium: 222mg | Potassium: 31mg | Fiber: 0.1g | Sugar: 26g | Vitamin A: 1751IU | Vitamin C: 13mg | Calcium: 5mg | Iron: 6mg