Who says you can’t have fun and stay healthy? This Healthy Funfetti Peanut Butter Oat Blondie Cake proves that better-for-you desserts don’t have to be boring. Made with creamy peanut butter, protein-rich Greek yogurt, and naturally sweetened with honey or maple syrup, this cake is soft, chewy, and bursting with color—thanks to festive rainbow sprinkles.
It’s the perfect blend of celebration and nutrition: a treat that feels like a party but fuels you like a smart snack. Whether you’re baking for kids, guests, or yourself (no shame!), this blondie-style cake is a feel-good dessert that everyone can enjoy.
Why You’ll Love This Funfetti Blondie Cake
Wholesome Yet Indulgent
No refined flour or sugar—just oat flour, peanut butter, and real ingredients that taste like dessert but nourish like breakfast.
Moist, Chewy Texture
Thanks to Greek yogurt and peanut butter, the blondie cake stays moist and soft with every bite.
Naturally Sweetened
Honey or maple syrup adds just the right amount of sweetness without the sugar crash.
Fun and Festive
Rainbow sprinkles make this recipe feel like a celebration—without adding artificial junk.
What’s Inside: Ingredient Benefits
Let’s break down why this cake is more than just pretty:
Peanut Butter
A creamy base that adds richness, healthy fats, and plant-based protein. Keeps you full and satisfied.
Greek Yogurt
Moistens the cake without needing oil or butter. Also adds a protein boost and gut-friendly probiotics.
Honey or Maple Syrup
Natural sweeteners that deliver flavor and sweetness without refined sugar.
Oat Flour
Made from finely ground oats, oat flour is high in fiber and naturally gluten-free (if certified).
Rainbow Sprinkles
They don’t add much nutrition—but they add a lot of joy. Choose naturally colored sprinkles for an even cleaner treat.
Healthy Funfetti Peanut Butter Oat Blondie Cake Recipe
Ingredients:
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1/2 cup natural peanut butter
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1/3 cup plain Greek yogurt
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1/4 cup honey or maple syrup
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1 large egg
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1 teaspoon vanilla extract
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1 cup oat flour
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1/2 teaspoon baking powder
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1/4 teaspoon salt
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2 tablespoons rainbow sprinkles
Directions:
1. Preheat the oven
Preheat to 350°F (175°C) and line a small square pan (8×8 inch or similar) with parchment paper.
2. Mix the wet ingredients
In a mixing bowl, stir together peanut butter, Greek yogurt, honey (or syrup), egg, and vanilla until smooth and creamy.
3. Add the dry ingredients
Stir in oat flour, baking powder, and salt. Mix until a smooth, thick batter forms.
4. Fold in the sprinkles
Gently stir in the rainbow sprinkles. Be careful not to overmix to preserve the colors.
5. Bake
Spread the batter evenly into your prepared pan. Bake for 20–24 minutes, or until the top is golden and the center is just set.
6. Cool and slice
Let the cake cool completely in the pan. Once cooled, lift out and slice into blondie-style cake squares.
Customization Tips
Want to personalize this colorful blondie cake? Try these ideas:
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Nut-Free Option: Swap peanut butter with sunflower seed butter.
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Vegan Version: Use a flax egg (1 tbsp flaxseed meal + 2.5 tbsp water) and plant-based yogurt.
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Extra Flavor: Add 1/2 teaspoon of almond extract or a dash of cinnamon.
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More Texture: Fold in chopped nuts, white chocolate chips, or dried fruit alongside the sprinkles.
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Less Sweet: Reduce the honey or syrup by 1 tablespoon for a milder taste.
Storage & Freezing
This blondie cake stores well for snacking throughout the week:
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Room Temperature: Store in an airtight container for 2–3 days.
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Fridge: Keeps fresh for up to 6 days. Tastes great chilled!
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Freezer: Wrap squares individually and freeze for up to 2 months. Thaw in the fridge or microwave for 10–15 seconds.
Nutritional Info (Per Square – Approximate, based on 9 squares)
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Calories: 180
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Protein: 5g
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Carbohydrates: 18g
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Sugar: 9g
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Fiber: 2g
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Fat: 9g
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Saturated Fat: 2g
This treat is light, nourishing, and satisfying enough to be a snack—or even a breakfast bar on a busy day.
When to Enjoy It
This funfetti blondie cake is great for:
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Birthday breakfasts -
School lunchbox surprises -
Afternoon tea treats -
Healthier dessert options
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Celebrations with a clean twist
Kids love the colors. Adults love the flavor. Everyone wins.
Final Thoughts
This Healthy Funfetti Peanut Butter Oat Blondie Cake is proof that you can celebrate with food that’s just as joyful as it is nourishing. It’s soft, sweet, and playful—with real ingredients that you can feel good about serving and eating.
So the next time you want to bake something fun and wholesome, skip the boxed mix and whip up this easy, one-bowl recipe instead. It’s guaranteed to make you smile—with every colorful, peanut buttery bite.