Ultimate Chewy Funfetti Blondies

Irresistible Thin and Chewy Funfetti Blondies: Your New Favorite Dessert!

These delightful thin and chewy funfetti blondie bars are incredibly easy to make and so addictively delicious, you’ll find it nearly impossible to share them!

Prepare yourself. Once you experience these charming funfetti blondie bars, your self-control might just vanish into thin air. They possess a deceptive simplicity, an understated elegance that belies their powerful deliciousness. I understand if you’re skeptical; I once was, too.

There was a time when I believed that true temptation only came in the form of hefty chocolate chip cookies, not thin, sprinkle-laden cookie bars. Sprinkles, while undeniably cute and festive, were never my ultimate weakness, especially when compared to the rich allure of chocolate.

Stacked thin and chewy funfetti blondie bars, with a bite taken out of the top one, showcasing colorful sprinkles.

However, these funfetti blondie bars proved me gloriously wrong. Not only was I completely taken aback by their incredible flavor, but my supposed self-control was utterly defeated. I found myself continuously “sampling” nibbles, then bites, then entire sections of these vibrant, chewy treats. Their power isn’t in overwhelming richness or an elaborate presentation; it’s in their perfect balance and simplicity.

That, and the magical combination of being both thin and wonderfully chewy – a texture pairing that, in my opinion, defines the ultimate cookie bar experience. My children, with their unwavering honesty, declared these the finest treats of the year. While I might reserve that top spot for something involving molten chocolate, these blondies undeniably boast a serious “yummy factor” that makes them incredibly hard to resist.

Why You’ll Fall in Love with These Funfetti Blondies

These aren’t just any blondies; they are a celebration of simplicity and joyous flavor. Here’s why they’re destined to become a staple in your baking repertoire:

  • Unbeatable Texture: Imagine a blondie that’s perfectly thin, offering just the right bite, yet boasts a soft, irresistibly chewy interior. This unique combination ensures every mouthful is a delightful experience.
  • A Burst of Color and Joy: The vibrant rainbow sprinkles transform these simple bars into a festive treat that instantly brightens any day. They’re perfect for birthdays, holidays, or just adding a pop of happiness to your afternoon.
  • Effortlessly Easy to Make: With straightforward ingredients and minimal steps, these blondies are a dream for bakers of all skill levels. They come together quickly, making them an ideal last-minute dessert or a fun baking project with kids.
  • Crowd-Pleasing Perfection: From school bake sales to family gatherings, these funfetti blondies are universally loved. Their sweet, buttery flavor and playful appearance make them a guaranteed hit with both children and adults.
  • From-Scratch Goodness: While there are plenty of box mixes out there, nothing beats the fresh, homemade taste of a dessert made from scratch. You control the quality of ingredients, resulting in a superior flavor and texture.

The Magic Behind Funfetti Blondies

What exactly sets a blondie apart, and why do these funfetti versions hold such a special place in our hearts? Blondies are often described as brownies without the chocolate, but that doesn’t quite capture their essence. They boast a rich, buttery, caramel-like flavor, often enhanced by brown sugar, which gives them their distinctive “blond” hue. When you add funfetti sprinkles, you infuse that classic blondie base with playful color and a subtle hint of “cake batter” flavor, elevating it beyond the ordinary.

These bars strike a perfect balance between a cookie and a cake. They have the chewiness and crisp edges of a great cookie but remain wonderfully soft and moist like a cake. The sprinkles melt slightly during baking, creating tiny pockets of vibrant color and a delightful, almost imperceptible textural difference that makes each bite exciting.

Colorful sprinkle-filled blondie bars stacked on each other on parchment paper, ready to be served.

A Look Back:
One Year Ago: Light and Fluffy Yellow Cupcakes
Two Years Ago: Classic Deviled Eggs
Three Years Ago: Macaroni Grill Rosemary Bread

A top-down view of a stack of golden brown funfetti blondie bars, topped with colorful sprinkles.

Thin and Chewy Funfetti Blondies {From-Scratch}

Yield: 24 Bars (9X13-inch pan)
Prep Time: 15 minutes
Cook Time: 25 minutes
Total Time: 40 minutes

4.73 stars (37 ratings)
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Ingredients for Perfect Funfetti Blondies

  • 12 tablespoons (170 g) 1 1/2 sticks, salted butter, melted and cooled slightly so it isn’t piping hot (but don’t let it solidify)
  • 1 cup (212 g) granulated sugar
  • ½ cup (106 g) light brown sugar
  • 2 large eggs
  • 1 tablespoon clear vanilla extract (see note)
  • 2 cups (284 g) all-purpose flour
  • ½ cup (57 g) dry milk powder
  • 1 teaspoon baking soda
  • ½ teaspoon salt
  • ½ to ¾ cup (85 to 142 g) rainbow sprinkles (see note)

Step-by-Step Instructions

  • Preheat your oven to 350 degrees F (175°C). Lightly grease a 9×13-inch aluminum baking pan and set it aside. While you can use a glass pan, it’s recommended to reduce the oven temperature to 325 degrees F (160°C) and adjust baking time accordingly, as glass retains heat differently.
  • In a large mixing bowl, combine the slightly cooled melted butter, granulated sugar, and light brown sugar. Use a handheld electric mixer or a stand mixer fitted with the paddle attachment to beat these ingredients together until they are thoroughly combined and smooth. Then, add the eggs and clear vanilla extract, mixing for another 2-3 minutes until the mixture is light, creamy, and well aerated.
  • In a separate medium bowl, whisk together the dry ingredients: all-purpose flour, dry milk powder, baking soda, and salt. Finally, gently fold in the rainbow sprinkles. Whisking ensures an even distribution and helps prevent lumps.
  • Gradually add the whisked dry ingredients to the wet batter. Stir gently with a wooden spoon or a spatula until just combined. Be careful not to overmix, as this can lead to tough blondies and may cause the sprinkles to break apart and bleed their colors into the batter, losing their vibrant definition. Ensure no dry streaks of flour remain.
  • Evenly spread the prepared blondie batter into your greased 9×13-inch baking pan. Bake for 20-25 minutes, or until the edges are lightly golden brown and begin to pull away from the sides of the pan. The center should look set, but still slightly soft – avoid overbaking to maintain that signature chewy texture. It’s common for the edges to rise slightly higher than the center, especially as they cool, which is perfectly fine. Let the blondies cool completely in the pan before cutting them into squares. This patience is crucial for neat slices and the best texture.

Helpful Notes and Pro Tips

Vanilla Extract Choice: Clear vanilla extract is specified to help maintain a lighter color in these blondies, as the brown sugar can naturally darken the batter. If clear vanilla extract isn’t available, don’t worry! You can substitute with 1/2 to 1 teaspoon of pure vanilla extract. While it might result in a slightly darker blondie, the flavor will still be fantastic.

Selecting the Right Sprinkles: For the best funfetti effect, use high-quality rainbow sprinkles, often referred to as “jimmie” sprinkles or rod-shaped sprinkles. These hold their color and shape better during baking. You can typically find these in larger containers online (like these), at specialty craft/cake decorating supply stores, or even in the baking aisle of many grocery stores. Ensure you have enough for the recipe, usually ½ to ¾ cup for a truly festive look.

Sprinkle Color Considerations: While rainbow sprinkles are classic, feel free to use specific colors for themed events or holidays! Just be aware that some darker colors, particularly blues and greens, might “muddy up” the batter slightly, though this often isn’t a significant issue. However, we strongly recommend avoiding black and brown sprinkles, as they tend to look less appealing once baked. Always opt for the long, skinny jimmie sprinkles rather than the tiny, round nonpareils, which tend to dissolve and bleed color more readily.

Pan Type Matters: As mentioned in the instructions, an aluminum baking pan is ideal for even heat distribution and consistent baking results. If using a glass pan, reduce the oven temperature by 25 degrees F and keep a close eye on the blondies, as glass pans can conduct heat more intensely and potentially lead to overbaking the edges before the center is done.

The Importance of Cooling: Resist the urge to cut into these blondies while they are still warm! They need to cool completely to set properly and develop their signature thin and chewy texture. Cutting them too soon can result in a crumbly mess and a less satisfying chew. Patience is key for perfect blondie bars.

Author: Mel
Course: Dessert
Cuisine: American
Method: Bake
Serving: 1Bar, Calories: 168kcal, Carbohydrates: 25g, Protein: 3g, Fat: 6g, Saturated Fat: 4g, Cholesterol: 29mg, Sodium: 165mg, Fiber: 1g, Sugar: 17g

Recommended Baking Equipment

9X13-inch Metal Baking Pan
Electric Hand Mixer
Mixing Bowl

Recipe Source: This recipe is adapted from Mel’s Kitchen Cafe, originally based on their classic chocolate chip blondie recipe, with significant modifications and additions to achieve this delightful cake batter-esque funfetti flavor and thin, chewy texture.

Tips for Achieving the Perfect Thin & Chewy Funfetti Blondies

  • Don’t Overmix the Batter: Once you add the dry ingredients, mix just until no streaks of flour remain. Overmixing develops the gluten in the flour, which can lead to tough, dry blondies instead of the desired chewy texture. It can also cause sprinkles to break down and bleed color.
  • Properly Melted Butter: Ensure your butter is melted but has cooled slightly. If it’s too hot, it can “cook” the eggs when added, leading to a grainy texture. If it’s too cool and starts to solidify, it won’t incorporate properly.
  • Room Temperature Eggs: Like many baked goods, using room temperature eggs helps them emulsify better with the other ingredients, resulting in a smoother, more uniform batter and a lighter, airier texture.
  • Don’t Overbake! This is perhaps the most crucial tip for chewy blondies. They should look slightly underbaked in the center when you pull them out of the oven. The residual heat will continue to cook them as they cool. Overbaked blondies will be dry and crumbly.
  • Cool Completely: As noted in the recipe, allow the blondies to cool entirely in the pan before cutting. This gives them time to set and firm up, making them easier to cut cleanly and ensuring that perfect chewy texture.

Funfetti Blondie Variations and Serving Suggestions

While these funfetti blondies are perfect as is, they also serve as a fantastic base for customization:

  • Add White Chocolate Chips: For an extra layer of sweetness and texture, fold in half a cup of white chocolate chips along with the sprinkles.
  • Holiday Themed: Swap out the rainbow sprinkles for colors appropriate for any holiday – red and green for Christmas, pastels for Easter, orange and black for Halloween, or red, white, and blue for patriotic celebrations.
  • Nutty Twist: For those who love nuts in their baked goods, a half-cup of chopped walnuts or pecans can add a pleasant crunch and earthy flavor.
  • Lemon Zest Brightness: A teaspoon of fresh lemon zest can brighten the flavor profile, adding a subtle tang that complements the sweet blondies beautifully.
  • Glaze Them: Drizzle a simple vanilla glaze over the cooled blondies for an extra touch of sweetness and an elegant finish.

Serve these thin and chewy funfetti blondies with a tall glass of cold milk, a scoop of vanilla ice cream, or a warm cup of coffee for a truly delightful treat. They’re excellent for parties, potlucks, or simply enjoying at home with loved ones.

Storing Your Funfetti Blondies

These blondies keep exceptionally well, making them perfect for making ahead or enjoying over several days. Store them in an airtight container at room temperature for up to 3-4 days to maintain their chewiness. If you prefer them chilled, they also taste delicious straight from the refrigerator, offering a firmer, denser bite. They can even be frozen for longer storage; wrap individual bars tightly in plastic wrap and then place them in a freezer-safe bag for up to 2-3 months. Thaw at room temperature before serving.

Other Recipes You Might Love:

Walnut Chocolate Chip Blondies {Applebee’s Knock-off Recipe}Craving that iconic restaurant dessert? This copycat recipe delivers rich, nutty, and chocolatey blondies right to your kitchen.
Quick and Easy Funfetti Shortbread Bites {Egg-free}Delight in these melt-in-your-mouth, egg-free shortbread cookies bursting with colorful sprinkles – a delightful treat for all!
Cookie Dough and Funfetti Greek Yogurt DipsEnjoy a healthier dessert option with these creamy, flavorful Greek yogurt dips – perfect for fruit or graham crackers.
Vanilla Funfetti Mug Cake {Egg and Dairy Free}Whip up a quick, single-serving treat with this vanilla funfetti mug cake recipe, completely egg and dairy-free!

Final Thoughts on These Delightful Blondies

These thin and chewy funfetti blondies are more than just a dessert; they’re a little bite of happiness. Their simple ingredients and straightforward method make them approachable for any baker, while their vibrant appearance and irresistible taste guarantee they’ll be a star at any gathering. Whether you’re a seasoned baker or just starting your culinary journey, these blondies are a must-try. So go ahead, whip up a batch, and prepare to fall in love with your new favorite sprinkle-filled treat!