These over-the-top Confetti Killer Brownies are a celebration in every bite—thick, gooey layers of buttery funfetti blondie packed with rainbow sprinkles, luscious caramel, and melty white chocolate chunks. Whether you’re baking for a birthday, a party, or simply indulging in a rich and colorful treat, these bars are the ultimate crowd-pleaser.

Why You’ll Love This Recipe

Confetti Killer Brownies are the definition of fun and flavor. With their soft, chewy texture and festive appearance, they offer a sweet escape with every bite. The hidden layer of caramel adds gooey richness, while rainbow sprinkles make them perfect for any celebration. Plus, they’re easy to make in one pan—no mixer required!

ingredients

(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)

1 cup unsalted butter, melted
1 1/4 cups light brown sugar, packed
1/2 cup granulated sugar
2 large eggs
2 teaspoons vanilla extract
2 cups all-purpose flour
1/2 teaspoon baking powder
1/2 teaspoon salt
1/2 cup white chocolate chips or chunks
1/2 cup rainbow sprinkles
1/2 cup caramel sauce (thick, for layering)
Optional: additional sprinkles and caramel for topping

directions

Preheat the oven to 350°F (175°C). Line an 8×8-inch or 9×9-inch baking pan with parchment paper, leaving some overhang for easy removal.
In a large mixing bowl, whisk together the melted butter, brown sugar, and granulated sugar until smooth and combined.
Add the eggs and vanilla extract. Whisk until the mixture is thick and glossy.
Stir in the flour, baking powder, and salt until just combined. Be careful not to overmix.
Fold in the white chocolate chips and rainbow sprinkles.
Spread half of the blondie batter evenly into the bottom of the prepared pan.
Drizzle the caramel sauce evenly over the batter, keeping it away from the edges.
Carefully spread the remaining blondie batter over the caramel layer and smooth the top with a spatula.
Bake for 30–35 minutes, or until the top is golden and the center is just set.
Allow to cool completely in the pan before slicing into bars.
Optional: Drizzle with additional caramel and sprinkle more rainbow confetti on top before serving.

Servings and timing

Prep Time: 15 minutes
Baking Time: 35 minutes
Total Time: 50 minutes
Servings: 9 large bars
Calories: 460 kcal per bar

Variations

Birthday Cake: Add a few drops of almond extract and extra sprinkles for a cake batter vibe.
Salted Caramel: Sprinkle sea salt over the caramel layer before baking for a sweet-salty twist.
Chocolate Swirl: Mix some mini chocolate chips into the batter or swirl chocolate sauce with caramel.
Nutty Version: Add chopped pecans or walnuts for extra texture and flavor.
Frosted Finish: Top with vanilla frosting and even more sprinkles once cooled for an over-the-top finish.

storage/reheating

Store the bars in an airtight container at room temperature for up to 3 days or in the refrigerator for up to 5 days. For best texture, allow refrigerated bars to come to room temperature before serving. These brownies can also be frozen for up to 2 months—wrap individually for easy snacking. Thaw at room temperature or warm gently in the microwave for a few seconds.

FAQs

Can I use store-bought caramel sauce?

Yes, a thick, high-quality caramel sauce works best to hold its shape and stay gooey after baking.

Do I have to use white chocolate chips?

No, you can substitute with milk or dark chocolate chips, or use a mix.

How do I prevent the caramel from leaking out the sides?

Keep the caramel layer away from the edges when layering, and ensure the top layer of batter fully covers it.

Can I make these in a larger pan?

Yes, but the bars will be thinner. For a 9×13-inch pan, consider doubling the recipe for thicker results.

Are these brownies or blondies?

They’re technically blondies, but their rich layers and bar format earn them the “brownie” title.

Can I make these gluten-free?

Yes, use a 1:1 gluten-free all-purpose flour blend. Be sure to check your caramel and sprinkles for gluten as well.

Can I reduce the sugar?

You can slightly reduce the sugar, but the texture and richness may be affected.

How can I tell when they’re done?

The top should be golden and slightly firm; a toothpick inserted near the edge should come out with moist crumbs (not wet batter).

Can I use salted butter?

Yes, but reduce or omit the added salt in the recipe to balance the flavors.

Are these good for kids’ parties?

Absolutely—kids love the colorful sprinkles and sweet, chewy texture.

Conclusion

Confetti Killer Brownies are the ultimate celebration bar—bright, bold, and bursting with indulgent flavor. Perfect for birthdays, parties, or just satisfying a serious dessert craving, these bars combine everything you love about blondies with gooey caramel and colorful flair. Once you make them, you’ll see why they’re called “killer” brownies.