Introduction

Funfetti Cake Batter Blondies with Sprinkles are a colorful, festive twist on traditional blondies. They combine the rich, buttery sweetness of a classic blondie with the playful charm of rainbow sprinkles and cake batter flavor, creating a dessert that’s perfect for birthdays, parties, or anytime you want a cheerful treat.

Unlike brownies, blondies are soft, chewy, and buttery, with a golden hue and a slightly caramelized bottom. Adding cake batter and sprinkles transforms them into a vibrant, fun dessert that’s almost too pretty to eat — but too delicious not to! Each bite delivers chewy, buttery sweetness with pops of rainbow color, making them a surefire crowd-pleaser for kids and adults alike.

Why I Love This Recipe

I love this recipe because it’s joyful and indulgent all at once. The buttery blondie base pairs beautifully with the cake batter flavor and sprinkles, creating a dessert that’s soft, chewy, and visually fun.

It’s also easy to make — no complicated layers or frosting required. Just mix, bake, and enjoy! The sprinkles throughout give a playful look, making these blondies perfect for celebrations or gifting.

Why It’s a Must-Try Dish

• Fun and festive: Perfect for birthdays, holidays, or party desserts.
• Chewy and rich: The blondie texture is irresistibly soft and buttery.
• Easy to bake: One-pan dessert that doesn’t require frosting.
• Customizable: Add chocolate chips, nuts, or frosting if desired.
• Kid-friendly and Instagram-worthy: Bright, colorful, and perfect for sharing.

Preparation and Cooking Time

• Preparation Time: 15 minutes
• Cooking Time: 25–30 minutes
• Total Time: 40–45 minutes

Servings and Nutrition

• Servings: 16 squares
• Calories: Approximately 250–280 kcal per serving

Course and Cuisine

• Course: Dessert / Sweet Treat
• Cuisine: American / Celebration Dessert

Ingredients

For the Blondie Base:

• 1 cup (2 sticks) unsalted butter, melted
• 1 ½ cups brown sugar, packed
• 2 large eggs
• 2 tsp vanilla extract
• 2 cups all-purpose flour
• ½ tsp baking powder
• ¼ tsp salt

For the Cake Batter and Funfetti:

• ½ cup vanilla cake mix (dry)
• ½ cup rainbow sprinkles (plus extra for topping)

Optional Add-Ins:

• ½ cup white chocolate chips or mini chocolate chips
• ¼ cup chopped nuts (walnuts or pecans)

Step-by-Step Preparation Method

Step 1: Preheat Oven and Prepare Pan

1. Preheat oven to 350°F (175°C).
2. Line a 9×13-inch baking pan with parchment paper or lightly grease with butter.

Step 2: Make the Blondie Batter

1. In a large bowl, combine melted butter and brown sugar, mixing until smooth and well combined.
2. Add eggs and vanilla extract, and whisk until fully incorporated.
3. In a separate bowl, whisk together flour, baking powder, salt, and dry cake mix.
4. Gradually fold the dry ingredients into the wet mixture until a smooth batter forms.

Step 3: Add Funfetti

1. Gently fold in rainbow sprinkles (reserve a few for topping).
2. Add any optional white chocolate chips or nuts if desired.

Step 4: Bake the Blondies

1. Pour the batter evenly into the prepared baking pan.
2. Sprinkle remaining rainbow sprinkles on top for extra color.
3. Bake in preheated oven for 25–30 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.
4. Do not overbake — the blondies should remain soft and chewy.

Step 5: Cool and Cut

1. Allow the blondies to cool completely in the pan.
2. Lift out using the parchment paper and cut into 16 squares with a sharp knife.

Step 6: Serve

• Serve as-is, or top with whipped cream, frosting, or a drizzle of melted chocolate for extra indulgence.
• Perfect for dessert plates, party platters, or lunchbox treats.

How to Serve

• Serve at room temperature for the perfect chewy texture.
• Pair with ice cream, milk, or a hot beverage.
• Arrange on a decorative platter for birthdays, celebrations, or themed parties.

Recipe Tips

• Do not overmix: Overmixing can make the blondies dense instead of chewy.
• Chewy edges: Bake just until a toothpick comes out with a few moist crumbs.
• Even baking: Spread batter evenly in the pan and gently tap to release air bubbles.
• Storage tip: Keep in an airtight container at room temperature to maintain softness.

Variations

1. Chocolate Funfetti Blondies: Add ½ cup cocoa powder to the batter for a chocolate version.
2. Peanut Butter Swirl: Swirl in ½ cup peanut butter before baking.
3. Caramel Blondies: Drizzle caramel sauce over the top after baking.
4. Gluten-Free: Use a gluten-free all-purpose flour blend instead of regular flour.
5. Birthday Cake Bars: Frost with buttercream and add extra sprinkles on top for a birthday version.

Freezing and Storage

• Room Temperature: Store in an airtight container for 3–4 days.
• Refrigeration: Keep for up to 1 week; allow to come to room temperature before serving.
• Freezing:
  • Wrap individual bars in plastic wrap and freeze in a ziplock bag for up to 2 months.
  • Thaw at room temperature before serving.

Special Equipment Needed

• 9×13-inch baking pan
• Mixing bowls
• Whisk and spatula
• Parchment paper
• Sharp knife for cutting

Frequently Asked Questions

Q1: Can I use mini chocolate chips in the blondies?
Yes! White or milk chocolate chips pair wonderfully with the cake batter flavor.

Q2: Can I make this recipe dairy-free?
Yes — substitute butter with dairy-free margarine and use dairy-free chocolate chips.

Q3: Do I have to use cake mix?
Cake mix adds a fun flavor and helps lighten the blondies, but you can omit it for a classic blondie flavor.

Q4: Can I make them gluten-free?
Yes, replace all-purpose flour with a gluten-free all-purpose flour blend.

Q5: Can I make mini bars or cookie-sized portions?
Absolutely! Reduce baking time slightly (15–20 minutes) for smaller portions.

Conclusion

Funfetti Cake Batter Blondies with Sprinkles are a cheerful, buttery, and chewy dessert that brings color and joy to any occasion. The combination of rich blondie texture, sweet cake batter flavor, and rainbow sprinkles makes these bars irresistible for kids and adults alike.

They’re easy to make, visually stunning, and perfect for celebrations — from birthdays and holidays to casual family treats. These bars prove that dessert can be fun, festive, and delicious all at once!