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Turn leftover cake into Birthday Cake Granola! Packed with crunchy vanilla-almond clusters, sprinkles, and white chocolate, it’s a fun breakfast or snack.

Wondering what to do with leftover birthday cake? A few days after my birthday, I crumbled mine into a batch of homemade granola and paired it with a cookie butter latte for a breakfast that felt like a celebration.

With crunchy vanilla-almond clusters, bits of cake, colorful sprinkles, and a drizzle of white chocolate, this Birthday Cake Granola turns leftovers into something entirely new. Enjoy it over yogurt, with milk, or straight from the jar whenever you’re craving a little something sweet.

Ingredients

Old-Fashioned Rolled Oats: The base of the granola, giving it that classic hearty texture and plenty of crunch.
Leftover Cake: The ingredient that makes this granola special. Little bits of cake bake into the clusters, adding sweetness and birthday cake flavor throughout.
Sliced Almonds & Pecans: A mix of nuts adds crunch, richness, and a nutty flavor that keeps the granola from being overly sweet.
Maple Syrup: Adds sweetness and helps everything bake into crisp, golden clusters.
Egg White: A simple trick for creating bigger clusters and an extra-crunchy texture.
Vanilla & Almond Extracts: Together, they create that nostalgic birthday cake flavor with warm, bakery-style notes.
Sprinkles: A must for birthday cake granola. They add color, fun, and a little extra sweetness.
White Chocolate Chips: Mixed in after baking for creamy sweetness and a festive finishing touch.
Hemp Seeds: Add a subtle nutty flavor and a little extra texture to each handful.

How to Make Birthday Cake Granola

Combine the oats, almonds, pecans, and salt in a large bowl.

Whisk together the coconut oil, maple syrup, egg white, vanilla extract, and almond extract.

Pour the wet ingredients over the oat mixture and stir until evenly coated.

Spread onto a parchment-lined baking sheet and press into an even layer.

Top with the crumbled cake scraps.

Bake at 300°F, stirring once halfway through, until golden and crisp.

Let cool completely on the baking sheet.

Stir in the sprinkles, white chocolate chips, and hemp seeds (if using).

Store in an airtight container and enjoy.

Recipe and Storage Tips

Press the granola into the pan: Gently pressing the mixture into an even layer before baking helps create larger clusters.
Don’t skip the egg white: It helps bind the granola together and gives it that crunchy, cluster-filled texture.
Stir just once: Stir halfway through the bake to ensure even browning while still allowing clusters to form.
Let it cool completely: The granola will continue to crisp up as it cools. Resist the urge to stir it too soon.
Add the mix-ins after baking: Wait until the granola is completely cool before adding the sprinkles and white chocolate chips to prevent melting or color bleeding.
Use dry cake scraps: Day-old cake or slightly dried-out cake crumbs work best and help maintain the granola’s crunchy texture.
Watch the final few minutes: Every oven is a little different, so keep an eye on the granola near the end of baking to prevent the nuts from over-browning.
Storage: Once completely cooled, store the granola in an airtight container at room temperature for up to 2 weeks. Keeping it sealed will help maintain those crunchy clusters and prevent them from going stale.

Variations

One of my favorite things about homemade granola is how easy it is to adapt based on what you have on hand. Here are a few ways to make it your own:

Swap the cake: Try vanilla, funfetti, confetti, or even chocolate cake scraps for a different flavor profile.
Change the nuts: Pecans and almonds are my favorite combination, but walnuts, pistachios, or cashews work well too.
Use honey instead: Honey can be substituted for the maple syrup if that’s what you have in the pantry.
Switch up the chocolate: White chocolate keeps the birthday-cake vibe, but milk or dark chocolate chips are delicious, too.
Add more crunch and nutrition: Stir in extra hemp, pumpkin, or sunflower seeds after baking.
Make it extra festive: Add a few extra sprinkles just before serving for even more color and birthday cake flair. Change up the colors of your sprinkles for the season.
Try a different extract: A little lemon extract or coconut extract can give the granola a completely different twist.

Ways to Serve Birthday Cake Granola

Having granola on hand is a non-negotiable around here because it’s so versatile. It feels a little festive, but it’s easy enough to use in a quick breakfast or snack!

As a snack: I often grab a handful straight from the jar whenever I need something sweet and crunchy.
Over yogurt: Layer it over vanilla or Greek yogurt for an easy breakfast with plenty of crunch.
With milk: Pour it into a bowl and enjoy it like cereal for a breakfast that feels a little extra special.
Over ice cream: Sprinkle it over vanilla ice cream for a birthday cake-inspired dessert.
On smoothie bowls: A handful of granola adds texture and makes any smoothie bowl feel more satisfying.

If you’re looking for more birthday cake-flavored desserts, here are some of our favorites:

Follow me on Instagram @sprinklesandscribbles for more baking inspiration!