Spring Funfetti Blondies

Last Sunday, my neighbor's little girl spotted a rainbow through our kitchen window and asked if we could bake something just as colorful. I was elbow deep in a disastrous bread experiment that had already failed twice. The look on her face made me abandon the yeast immediately and reach for the sprinkles instead.

My college roommate used to make something similar during exam week when we all needed sugar and color to survive. She swore the sprinkles made her study better. We would sit cross legged on her dorm room floor eating them warm from the oven and somehow the chemistry problems seemed less impossible.

Ingredients

• All-purpose flour: The foundation that gives these blondies their structure and tender crumb
• Baking powder: Just enough lift to keep them from being too dense
• Salt: Crucial for balancing all that butter and sugar
• Unsalted butter: Melted creates that gorgeous glossy top and rich flavor we love
• Light brown sugar: The secret to that deep caramel notes and chewy texture
• Egg plus extra yolk: The extra yolk adds richness and keeps everything fudgy
• Pure vanilla extract: Dont skimp here because it amplifies all the buttery sweetness
• White chocolate chips: Optional but they pair beautifully with the vanilla base
• Rainbow sprinkles: Use jimmies not those tiny nonpareils that bleed color everywhere

Instructions

Get your oven ready:

Preheat to 350F and line an 8x8 inch pan with parchment paper letting the edges hang over like little handles

Whisk the dry team:

Combine flour baking powder and salt in a medium bowl and set it aside

Mix the butter and sugar:

Whisk melted butter and brown sugar until smooth and glossy which takes about a minute

Add the eggs and vanilla:

Whisk in the egg extra yolk and vanilla until everything is fully incorporated

Combine everything:

Gently fold the dry ingredients into the wet mixture until just combined because overmixing makes tough blondies

Fold in the fun stuff:

Add the white chocolate chips if using and most of the sprinkles saving a tablespoon for the top

Spread and bake:

Even the batter in your pan scatter those remaining sprinkles on top and bake 23 to 26 minutes until edges are set

Cool completely:

Let them cool completely in the pan then lift out with your parchment handles and cut into 16 squares

Save to Pinterest

My three year old niece helped me make a batch last spring and managed to get more sprinkles on the floor than in the bowl. The dog spent the next week finding rainbow surprises in her fur. Now every time she sees me measuring flour she asks if were making the happy cookies again.

Making Them Extra Special

Brown your butter first for a nutty depth that makes these taste like they came from a fancy bakery. The extra five minutes completely transforms the flavor profile and your kitchen will smell incredible. Just let it cool slightly before mixing or youll scramble the eggs.

Sprinkle Secrets

Pastel sprinkles give these a dreamy spring vibe while bright rainbows work for any celebration year round. I keep several jars on hand because you never know when you need emergency color. Store them in a cool dark place or the colors start to fade and look sad.

Storage and Sharing

These stay fresh for up to four days at room temperature if they last that long. I wrap individual squares in parchment and tuck them into lunch boxes for instant afternoon joy. They also freeze beautifully for up to three months.

• Layer them with wax paper in an airtight container
• Warm frozen ones for 15 seconds in the microwave
• Package a few in a clear bag tied with ribbon for effortless gifts

Save to Pinterest

Sometimes the simplest recipes bring the most color into our kitchens. Hope these brighten your day as much as they have mine.

Recipe Questions & Answers

→ What makes blondies different from brownies?

Blondies use brown sugar and vanilla as the primary flavor base instead of cocoa powder, resulting in a warm, caramel-like butterscotch flavor rather than chocolate.

→ Can I use nonpareils instead of jimmies for sprinkles?

Jimmies work best because they hold their shape during baking. Nonpareils tend to bleed color into the batter, creating a muddy appearance rather than distinct colorful pockets.

→ How should I store these blondies?

Keep in an airtight container at room temperature for up to 5 days. For longer storage, wrap individually and freeze for up to 3 months.

→ Why is there both egg and egg yolk?

The extra yolk adds richness and creates a denser, fudgier texture while still maintaining a tender crumb structure.

→ Can I make these without white chocolate chips?

Absolutely. The chips are optional. You can substitute chopped nuts, toffee bits, or enjoy them plain with just the sprinkles.

→ How do I know when blondies are done baking?

The edges should be set and slightly golden, while the center may still appear slightly underbaked. A toothpick should come out with moist crumbs, not wet batter.