
This nostalgic Fruity Pebbles twist on classic Rice Krispie treats transforms the beloved cereal into irresistible, vibrant squares that burst with fruity flavor. The rainbow colors create an instant mood-lifter, making these treats perfect for brightening any day or celebration.
I first made these for my daughter's rainbow-themed birthday party, and they've become our go-to treat whenever we need a quick dessert that guarantees smiles. The bright colors create such joy that I've started keeping the ingredients on hand for impromptu celebrations.
Ingredients
- Fruity Pebbles cereal: Creates the colorful base and provides that signature fruity flavor everyone loves
- Salted butter: Adds richness and helps prevent the marshmallows from sticking to the pan while balancing the sweetness
- Mini marshmallows: Melt more quickly and evenly than regular marshmallows creating that perfect gooey binding texture
Step-by-Step Instructions
- Prepare Your Workspace:
- Pour 5 cups of Fruity Pebbles into a large mixing bowl ensuring you have enough space to stir without spilling. Lightly grease an 8x8-inch pan with nonstick spray or butter making sure to coat all sides for easy removal later.
- Melt The Base:
- In a medium saucepan over low heat melt 1/4 cup salted butter completely. This will take about 1 minute. Once melted add 4 cups mini marshmallows to the pan. Stir constantly with a silicone spatula to prevent scorching until the marshmallows transform into a smooth creamy mixture about 3-5 minutes. The marshmallow mixture should look glossy and flow slowly from your spatula.
- Combine And Coat:
- Immediately pour the melted marshmallow mixture over the cereal while it's still hot and pliable. Work quickly as the marshmallow mixture begins setting as it cools. Use a rubber spatula to fold everything together ensuring every colorful piece gets evenly coated with the sweet sticky mixture.
- Form The Treats:
- Transfer the coated cereal mixture to your prepared 8x8-inch pan. Here's a crucial tip place a piece of wax paper or parchment paper over the mixture and use it to gently press the treats into an even layer. Avoid pressing too firmly or you'll compact the treats and make them dense rather than light and chewy.
- Cool And Serve:
- Allow the treats to cool completely at room temperature about 20-30 minutes. For quicker results place in the refrigerator for about 5 minutes just long enough to set without becoming too firm. Once cooled cut into 9 equal squares using a sharp knife.

The vibrant rainbow colors never fail to brighten my day. I keep these ingredients in my pantry specifically for those moments when my family needs a quick happiness boost. There's something magical about how the fruity cereal transforms into these soft sweet squares that brings instant joy to everyone who tries them.
Storage Tips
These Fruity Pebbles treats maintain their best texture and flavor when stored in an airtight container at room temperature for up to 3 days. I like to place a piece of parchment paper between layers if stacking them to prevent sticking. For longer storage you can freeze them for up to 6 weeks wrapped individually in plastic wrap and stored in a freezer bag. Allow frozen treats to thaw at room temperature for about 30 minutes before serving.
Variations To Try
The beauty of this recipe lies in its flexibility. Try using Cocoa Pebbles for a chocolate version or mixing in 1/2 cup of white chocolate chips while the mixture is still warm for added sweetness and texture. During holidays incorporate seasonal sprinkles by gently pressing them onto the top layer before cooling. You can also drizzle melted white chocolate across the top after cooling for an extra special presentation.
Perfect For Parties
These colorful treats make spectacular party desserts that appeal to all ages. Cut them into smaller bite-sized squares to serve more guests or use cookie cutters to create fun shapes for themed parties. I often make a double batch for gatherings and arrange them on a tiered serving plate for a simple but impressive dessert table centerpiece. Their vibrant appearance makes them perfect for birthdays celebrations school events or anytime you want to bring a little color to the dessert table.
Frequently Asked Questions
- → How do I keep the treats soft and chewy?
Be cautious not to overheat the marshmallows, and avoid pressing too hard when spreading the mixture into the pan. These tips ensure your treats stay light and chewy.
- → Can I use other cereals instead of Fruity Pebbles?
Yes, you can substitute Fruity Pebbles with other cereals like Cocoa Pebbles or plain Rice Krispies for a different flavor profile.
- → How should I store these treats?
Store the treats in an airtight container at room temperature for up to 3 days to maintain freshness and chewiness.
- → Can I double this recipe for a larger batch?
Absolutely! Simply double the ingredients and use a larger pan to accommodate the mixture.
- → How can I make these treats more festive?
Consider adding colorful sprinkles or drizzling melted white chocolate over the top for a fun, festive touch.