These Rainbow Rice Krispie Treats are bright, fun, and perfect for celebrations! Made with layers of colorful marshmallow cereal bars, they’re a playful twist on the classic Rice Krispie treat. Each vibrant layer creates a stunning rainbow effect that looks amazing on dessert tables.
This easy no-bake recipe is perfect for birthday parties, Pride celebrations, school events, and festive holidays. Kids especially love helping create the colorful layers!
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Why Rainbow Rice Krispie Treats Are Perfect for Any Celebration
Rainbow Rice Krispie Treats are more than just a colorful dessert—they’re a fun and creative treat that instantly brightens any table. The vibrant layers make them visually exciting, while the classic marshmallow cereal flavor keeps them familiar and comforting. Because they require no baking and only simple ingredients, they are perfect for beginner bakers or for making with kids. These treats are especially popular for birthday parties, school events, Pride celebrations, and holiday dessert trays because the rainbow layers create a festive look that stands out. You can even customize the colors to match specific party themes, seasonal holidays, or team colors. The combination of chewy marshmallows and crispy cereal makes every bite satisfying, and the layered presentation turns a simple snack into a dessert that looks impressive with very little effort.
Recipe Overview
Prep Time: 15 minutes
Cook Time: 6 minutes
Chill Time: 1 hour
Total Time: 1 hour 21 minutes
Yield: 12 bars
Course: Dessert / Snack
Cuisine: American
SEO Keywords:
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Ingredients
- Nonstick cooking spray
- 15 oz marshmallows, divided
- 6 tablespoons salted butter, divided
- 1½ teaspoons clear imitation vanilla, divided
- Red food coloring
- Blue food coloring
- Green food coloring
- Yellow food coloring
- 7½ cups Rice Krispies cereal, divided
- ½ teaspoon sea salt flakes (optional)
Instructions
1️⃣ Prepare the Pan
Lightly spray an 8×8-inch baking pan with nonstick spray.
Line the pan with parchment paper leaving 1-inch overhang for easy removal.
Spray parchment lightly.
2️⃣ Melt Marshmallows
In a microwave-safe bowl combine:
- 2½ oz marshmallows
- 1 tablespoon butter
Microwave 1 minute until marshmallows puff.
Add ¼ teaspoon vanilla and stir until smooth.
3️⃣ Add Food Coloring
Add coloring to create your first layer.
Example for purple:
- 12 drops red
- 10 drops blue
Mix thoroughly.
4️⃣ Add Cereal
Add 1¼ cups Rice Krispies cereal.
Stir until fully coated.
5️⃣ Press Into Pan
Spray hands with cooking spray.
Press mixture evenly into the pan forming a thin layer.
Work quickly before it hardens.
6️⃣ Repeat for Each Rainbow Layer
Wash bowl and repeat process for remaining colors:
- Blue layer – 12 drops blue
- Green layer – 12 drops green
- Yellow layer – 12 drops yellow
- Orange layer – 10 drops yellow + 4 drops red
- Red layer – 12 drops red
Press each layer gently on top of the previous one.
7️⃣ Chill
Sprinkle sea salt flakes on top if desired.
Allow treats to cool at least 1 hour.
Lift from pan using parchment.
Cut into 12 squares.
Pro Tips
✔ Spray hands to prevent sticking
✔ Work quickly before marshmallows harden
✔ Press gently to keep layers visible
✔ Use clear vanilla for brighter colors
Fun Variations
Birthday Rainbow Bars
Top with colorful sprinkles.
Chocolate Rainbow Treats
Drizzle melted chocolate over bars.
Unicorn Rice Krispie Bars
Add pastel food colors and edible glitter.
Holiday Rainbow Bars
Use themed colors for different celebrations.
Storage
Room Temperature:
Store in airtight container for 3–4 days.
Freezer:
Freeze up to 6 weeks.
Disclaimer
Nutritional information is estimated and may vary depending on ingredients used and portion sizes.
Rainbow Rice Krispie Treats
Ingredients
Equipment
Method
- Grease a baking dish and set aside.
- Melt butter and marshmallows together in a large saucepan over low heat until smooth.
- Stir in vanilla extract and divide the mixture into portions depending on how many rainbow layers you want.
- Add food coloring to each portion to create different colors.
- Mix each colored marshmallow mixture with a portion of the Rice Krispies cereal.
- Press the colored mixtures into the prepared pan one layer at a time to form rainbow layers.
- Allow the treats to cool completely before slicing into bars.
Nutrition
Notes
Tried this recipe?
Let us know how it was!Conclusion
These Rainbow Rice Krispie Treats are a fun and cheerful twist on a classic dessert. With their vibrant layers and soft marshmallow texture, they’re perfect for celebrations, parties, and family baking projects.
Simple, colorful, and incredibly delicious—this recipe proves that sometimes the most joyful desserts are also the easiest to make.