If you love the buttery richness of blondies and the festive fun of Funfetti cake, then Funfetti Blondies are your new favorite treat! These chewy, buttery, and vanilla-packed bars are bursting with colorful sprinkles, giving them a fun and celebratory look perfect for birthdays, holidays, or just because.

Unlike traditional brownies, blondies swap out cocoa for rich vanilla and brown sugar flavors, resulting in a soft and chewy texture with crispy edges. Whether you’re serving them at a party, packing them for a lunchbox treat, or just baking for fun, these blondies come together in under 30 minutes with simple ingredients and no mixer needed!

Why You’ll Love These Funfetti Blondies

One-Bowl Recipe: No need for a mixer—just stir, pour, and bake!
Chewy & Buttery: The perfect balance of soft, chewy centers and golden edges.
Fun & Colorful: Packed with sprinkles for a festive look.
Quick & Easy: Ready in under 30 minutes!
Customizable: Add white chocolate chips, nuts, or different sprinkles.

Preparation Time and Yield

Prep Time: 10 minutes
Cook Time: 20 minutes
Cooling Time: 15 minutes
Total Time: 45 minutes
Yield: 16 blondies

Nutritional Information (Per Blondie)

Calories: 230
Carbohydrates: 30g
Protein: 3g
Fat: 10g
Fiber: 0.5g
Sugar: 20g

Ingredients for Funfetti Blondies

½ cup (1 stick) unsalted butter, melted
¾ cup brown sugar, packed
¼ cup granulated sugar
1 large egg
1 tablespoon vanilla extract
1 cup all-purpose flour
½ teaspoon baking powder
¼ teaspoon salt
½ cup white chocolate chips (optional)
½ cup rainbow sprinkles (jimmies work best)

Step-by-Step Instructions for Funfetti Blondies

Step 1: Preheat the Oven

Preheat your oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper, leaving some overhang for easy removal.

Step 2: Mix the Wet Ingredients

In a large mixing bowl, whisk together melted butter, brown sugar, and granulated sugar until smooth. Add the egg and vanilla extract, and whisk until fully combined.

Step 3: Add the Dry Ingredients

Sift in the flour, baking powder, and salt. Stir gently with a spatula until just combined—do not overmix, or the blondies may be tough.

Step 4: Fold in Sprinkles & White Chocolate Chips

Gently fold in the rainbow sprinkles and white chocolate chips (if using), ensuring even distribution.

Step 5: Bake the Blondies

Pour the batter into the prepared baking pan, spreading it evenly. Add extra sprinkles on top for a fun finish! Bake for 20-22 minutes, or until the edges are golden and a toothpick inserted in the center comes out with a few moist crumbs.

Step 6: Cool & Slice

Let the blondies cool in the pan for 15 minutes, then lift them out using the parchment paper and transfer to a wire rack to cool completely. Slice into 16 squares and enjoy!

Ingredient Background

Brown Sugar & Granulated Sugar

Using a combination of brown sugar and granulated sugar gives these blondies their signature chewy texture. Brown sugar adds moisture and a deep caramel-like flavor, while granulated sugar helps create slightly crisp edges. If you want an even richer taste, you can use dark brown sugar instead of light brown sugar.

Butter

Melted unsalted butter is key to making chewy, dense blondies. Unlike cookies that rely on creamed butter for lift, blondies benefit from melted butter to create a rich and fudgy texture. For an extra flavor boost, try browning the butter before mixing it with the sugars!

Vanilla Extract

Since blondies don’t contain cocoa or chocolate, vanilla extract is essential for providing flavor. Using pure vanilla extract instead of imitation enhances the richness. If you want an extra pop of flavor, a dash of almond extract pairs beautifully with the vanilla and sprinkles!

Baking Powder

Unlike brownies, which use little to no leavening agents, these blondies include a small amount of baking powder to give them a slightly soft and cake-like bite while keeping them dense and chewy.

Sprinkles

The key to perfectly festive blondies is using the right type of sprinkles!

Best Option: Jimmies (long, thin sprinkles)—they hold their color and don’t bleed into the batter.
Avoid: Nonpareils (small round sprinkles)—they tend to dissolve and create streaks of color.

Technique Tips for Funfetti Blondies

1. Measure Flour Correctly

To prevent dense blondies, measure flour using the spoon-and-level method:

Do NOT scoop flour directly from the bag with your measuring cup (this packs in too much).
Instead, spoon flour into the cup and level it off with a knife.

2. Don’t Overmix the Batter

Overmixing the flour can lead to tough, dry blondies. Stir until just combined to keep them soft and chewy.

3. Bake Until Just Set

Blondies continue to firm up as they cool, so don’t overbake! They should be golden brown on the edges but still slightly soft in the center when you remove them from the oven. A toothpick inserted in the middle should come out with a few moist crumbs, not wet batter.

4. Let Them Cool Before Slicing

For clean, sharp edges, let the blondies cool completely before cutting. If they’re still warm, they may be too soft and fall apart.

Alternative Presentation Ideas

1. Birthday Funfetti Blondies

For an extra birthday celebration touch, top with a drizzle of vanilla glaze and extra sprinkles before serving!

2. Ice Cream Blondie Sandwiches

Cut the blondies into squares and sandwich a scoop of vanilla ice cream between two pieces for a decadent dessert. Roll the edges in sprinkles for even more fun!

3. Chocolate Drizzle or Frosting

For extra indulgence, drizzle the blondies with melted white chocolate or a simple vanilla glaze. You can also frost them with a thin layer of buttercream for a bakery-style twist!

4. Mini Blondie Bites

For a party-friendly version, cut the blondies into bite-sized squares and serve in mini cupcake liners.

Freezing and Storing Funfetti Blondies

Refrigeration & Room Temperature:

Store blondies in an airtight container at room temperature for up to 4 days.
If you prefer a firmer texture, store them in the refrigerator for up to a week.

Freezing for Later:

Uncut blondies: Wrap the entire cooled blondie slab in plastic wrap, then foil. Freeze for up to 3 months. Thaw in the fridge overnight before slicing.
Individually wrapped blondies: Wrap each blondie square in plastic wrap and freeze in a ziplock bag for grab-and-go treats.

Reheating (Optional):

Warm a blondie in the microwave for 10-15 seconds for a gooey, just-baked texture!

Healthier Twist Ideas

1. Reduce Sugar

Swap ½ cup coconut sugar for the brown sugar for a naturally sweetened option.
Reduce granulated sugar by ¼ cup for less sweetness.

2. Use Whole Wheat Flour

Replace half of the all-purpose flour with whole wheat flour for extra fiber without sacrificing chewiness.

3. Dairy-Free Version

Use coconut oil or vegan butter instead of regular butter.
Swap white chocolate chips for dairy-free chocolate.

4. Gluten-Free Funfetti Blondies

Use a 1:1 gluten-free flour blend instead of all-purpose flour. Ensure your sprinkles are gluten-free, as some brands may contain wheat-based ingredients.

Serving Suggestions for Events

1. Birthday Party Dessert

Serve with a scoop of ice cream and extra sprinkles for a fun and festive treat!

2. Holiday-Themed Blondies

Swap rainbow sprinkles for red and green for Christmas, pastel colors for Easter, or orange and black for Halloween.

3. Brunch or Afternoon Coffee Pairing

These blondies taste amazing alongside a cup of coffee, chai latte, or a vanilla milkshake.

4. Bake Sale Favorite

Cut into large, bakery-style squares and package in clear bags tied with colorful ribbon for a perfect bake sale treat!

Frequently Asked Questions (FAQs)

1. Can I make these without sprinkles?

Yes! You can skip the sprinkles or replace them with chocolate chips, nuts, or M&Ms.

2. How do I make them softer?

To keep blondies extra soft and chewy, make sure:

You don’t overbake them.
You store them in an airtight container to retain moisture.

3. Can I double the recipe?

Yes! Use a 9×13-inch pan and bake for 25-28 minutes.

4. What’s the best way to cut clean slices?

Use a sharp knife, wipe it clean between cuts, and refrigerate blondies before slicing for perfect edges.

5. Can I make these ahead of time?

Yes! These blondies taste even better the next day as the flavors develop.

6. How do I prevent my sprinkles from bleeding into the batter?

Use jimmies (long sprinkles) instead of nonpareils, which dissolve and create streaks.

7. Can I use cake mix instead of making them from scratch?

Yes! You can make an easy Funfetti cake mix blondie by combining:

1 box Funfetti cake mix
½ cup melted butter
1 egg
¼ cup milk
Mix, spread in a pan, and bake at 350°F for 20 minutes!

8. Can I add frosting?

Absolutely! A vanilla buttercream or cream cheese frosting pairs beautifully with these blondies.

9. What’s the best type of sprinkles to use?

Jimmies work best! Avoid nonpareils, which bleed color into the batter.

10. Can I add mix-ins like nuts or coconut?

Yes! Try ½ cup chopped pecans, almonds, or shredded coconut for extra texture.

Conclusion

Funfetti Blondies are the ultimate chewy, buttery, and sprinkle-filled dessert that brings instant joy to any occasion. Whether you’re baking for a birthday, holiday, bake sale, or just for fun, these blondies are easy, festive, and guaranteed to impress.

Give them a try today, customize with your favorite mix-ins, and enjoy a colorful, fun, and delicious dessert that everyone will love!