Frosted Fruity Pebble Blondies

Jump to Recipe

These Frosted Fruity Pebble Blondies are such a vibrant bake. White chocolate blondie bars get packed with Fruity Pebble cereal then baked before topping with a vanilla frosting! Finally, sprinkle over more cereal for a gorgeous looking bake with just the perfect texture contrast.

These blondie bars are also great for storing and transporting. The square shape of the bars makes them great to pop into sandwich bags or Tupperware to take for a grab-and-go snack. Alternatively, they’re a super cute option to drop off at a friends or to share with family at home! I once made these for a bake sale at work and they were super popular! 

To make these blondies, we rely heavily on the melted butter and light brown sugar to give the fudgy texture and super shiny topping. The crisp cereal on top of the frosting and throughout the batter makes for something so fun. This recipe cuts neatly into 9 pieces, and the thickness means this is a perfect serving in my opinion. That said, feel free to cut into smaller bites! 

The Key to Fudgy Blondies

I think there’s more difficulty in nailing a fudgy blondie vs a brownie. I know that I get far more questions on how to get that texture for this than any other bake. There are a few key things to keep in mind, but once you have this down, it really will feel so easy to get right every time. 0Making fudgy blondies involves a few key techniques:

1. Use the right ingredients: Incorporate ingredients like brown sugar, which adds moisture and a chewy texture. Additionally, using melted butter instead of softened butter can contribute to a fudgier texture.
2. Don’t overmix the batter: Overmixing can lead to gluten development, resulting in a tougher texture. Mix until just combined to avoid this.
3. Bake for the right amount of time: Be careful not to overbake blondies, as they will continue to cook slightly after being removed from the oven due to residual heat. We want them to verge on underbaked for the ultimate fudgy texture.
4. Cool properly: Allow the blondies to cool completely in the pan before cutting into squares. This allows them to set properly and develop their fudgy texture.
5. Add-ins: Consider adding ingredients like chocolate chips, nuts, or caramel swirls for extra flavor and texture, but be mindful not to overload the batter with mix-ins, as this can affect the texture.

By following these tips, you should be able to achieve deliciously fudgy blondies every time!

Ingredients Required

There are no specialist ingredients or equipment required for this bake. I can find everything I need at my local supermarket or grocery store. Also, I use a standard 8 inch square tin for almost all of my traybake recipes for ease. If you do want to convert to 9 inch, you’ll need to play with the quantities a little or they will be too thin. To line a square baking tin, cut two pieces of baking paper that are just narrower than the width of the tin (less than 8 inches wide). Then place one on top of the other in opposite directions, so that all four edges of the tin are covered. This will make removing the bake so much easier! 

• White Chocolate, Melted
• Unsalted Butter, Melted
• Light Brown Soft Sugar
• Granulated Sugar
• Large Free Range Egg
• Vanilla Extract
• Plain (All Purpose) Flour
• Fruity Pebbles Cereal
• Powdered Sugar

Tips for the best Frosted Fruity Pebble Blondies

• Brown Sugar: This is crucial to the perfect fudgy texture and deep flavour. You could use dark brown soft if you’re really in a pinch. Light brown is definitely your best friend in blondies.
• Melted Butter: This is what gives the bake that oh so Instagrammable shiny, crisp top. Don’t skip this step!
• Fruity Pebbles Cereal: This is the core of these blondies. Feel free to swap out a similar cereal, but stick to something with lots of color to keep the fun nostalgia! If you’re in a country where Fruity Pebbles are hard to find, use any similarly vibrant cereal.
• Melted White Chocolate: This gives the bake its richness and sweetness. Be really careful melting the white chocolate as it is prone to burning!
• Frosting: Make sure your butter is at room temperature before making the frosting. This is a basic vanilla buttercream recipe, so it comes together really easily. This recipe makes a generous amount, perfect to cover the top of the blondies.

For these Frosted Fruity Pebble Blondies I use a basic 8′ square pan (I like this one), and recommend using an electric or stand mixer to really combine the butter and sugars (with a mixer like this). If you want more traybake recipes try these Caramelized Apple Crisp Blondies. For videos and baking inspiration, head on over to my Instagram.

Storage and Making Ahead: Frosted Fruity Pebble Blondies

Because of the frosting, you need to store these blondies in the refrigerator. Place in an airtight container before placing in the fridge. It will keep for up to 3 days this way. A cake tin is a great option if you have one. It can sit out while you serve and eat, just keep it in the fridge if it will go a while without being eaten.

Alternatively, you can freeze the blondie itself before it gets frosted. Completely wrap as tight as you can using cling film/Saran wrap. If you have an airtight container too, place it in there before freezing. Let thaw in the fridge before making the frosting and serving!