Name: Chewy Funfetti Bars from Scratch (No Cake Mix) Recipe
Prep time: 30 min
Cook time: 30 min
Total time: 3 h 10 min
Cuisine: American
Ingredients: 2½ cups all-purpose flour (spooned and leveled); 1 tsp baking soda; 1 tsp baking powder; ½ tsp salt; ¾ cup unsalted butter (softened); 1½ cups granulated sugar; 2 eggs (Use 1 whole egg, 1 yolk from the second egg); 1 tsp vanilla extract; ¾ cup rainbow sprinkles; 1 cup unsalted butter (softened to room temperature); 3 cups powdered sugar; 1 tsp pure vanilla extract; 2 tbsp heavy cream; Pinch of salt; Gel food coloring (pink, purple, teal); Assorted sprinkles (stars, edible glitter, nonpareils)

Print Recipe· 4.4 from 4 reviews

If you are ready to embark on a delightful baking adventure, you’ll love this Chewy Funfetti Bars from Scratch (No Cake Mix) Recipe. Bursting with colorful sprinkles and topped with a luscious, marbled buttercream frosting, these bars combine a tender chewiness with vibrant fun. Perfect for celebrations or whenever you want to add a sprinkle-filled smile to your day, this recipe is a heartfelt homemade treat that everyone will adore, made entirely from scratch with no shortcuts!

Ingredients You’ll Need

A rectangular white baking dish lined with white parchment paper holds a thick, single layer of yellowish dough mixed with colorful sprinkles scattered evenly throughout. The dough has a slightly rough texture with visible small chunks and creases, filling the dish completely and smoothed to the edges. The surface beneath the dish is a white marbled texture. photo taken with an iphone --ar 4:5 --v 7

The magic of these Chewy Funfetti Bars from Scratch (No Cake Mix) Recipe lies in its simple yet thoughtful combination of ingredients. Each component plays a crucial role: from the tenderizing butter and eggs to the vibrant sprinkles, every item contributes to the texture, flavor, and joyful appearance.

2½ cups all-purpose flour: Provides the perfect sturdy but tender base for the bars.
1 tsp baking soda: Adds gentle leavening to keep the bars light and chewy.
1 tsp baking powder: Works alongside baking soda to perfect the texture.
½ tsp salt: Balances sweetness and enhances overall flavor.
¾ cup unsalted butter (softened): Vital for moistness and that irresistible chewiness.
1½ cups granulated sugar: Sweetens and creates a tender crumb.
2 eggs (1 whole egg + 1 yolk): Build structure while keeping the bars rich and soft.
1 tsp vanilla extract: Adds warm, aromatic depth to every bite.
¾ cup rainbow sprinkles: For that iconic funfetti burst of color and excitement.
1 cup unsalted butter (softened to room temperature) for frosting: Forms the creamy base for the luxurious buttercream.
3 cups powdered sugar: Sweetens and thickens the frosting to perfection.
1 tsp pure vanilla extract: Enhances the frosting’s flavor elegantly.
2 tbsp heavy cream: Helps achieve a silky, spreadable frosting texture.
Pinch of salt: Balances sweetness in the buttercream.
Gel food coloring (pink, purple, teal): Brings a stunning, playful palette to your frosting.
Assorted sprinkles (stars, edible glitter, nonpareils): Adds a whimsical finishing touch on top.

How to Make Chewy Funfetti Bars from Scratch (No Cake Mix) Recipe

Step 1: Prepare Your Baking Environment

First things first, preheat your oven to 350°F and line a 9×13 inch baking pan with parchment paper, ensuring you leave an overhang on the sides for effortless removal. Lightly grease the parchment so your bars won’t stick, making cleanup a breeze and your bars perfectly intact.

Step 2: Mix the Dry Ingredients

In a medium bowl, whisk together the all-purpose flour, baking soda, baking powder, and salt. This ensures even distribution of the leavening agents and seasoning, setting the stage for perfectly tender bars.

Step 3: Cream Butter and Sugar

Using an electric mixer, cream the softened butter and granulated sugar on medium speed until the mixture is fluffy and light — about 2 minutes. This step is key to incorporating air, giving the bars a light texture and crumb.

Step 4: Combine Wet Ingredients

Beat in 1 whole egg and 1 egg yolk, followed by the vanilla extract. The eggs bring richness and help bind the bars, while that splash of vanilla adds nostalgic warmth.

Step 5: Add Dry Ingredients to Wet

Gradually mix your dry flour mixture into the wet ingredients on low speed, stirring just until combined. Overmixing can toughen your bars, so keep it gentle for that signature chewy texture.

Step 6: Fold in Sprinkles

Gently fold in the rainbow sprinkles with a spatula, being careful not to over-stir and cause the colors to bleed too much. This brings that classic funfetti look and unexpected bursts of color in every bite.

Step 7: Spread Batter and Bake

Spread the thick batter evenly into the prepared pan. Bake for 25-30 minutes or until the edges turn lightly golden and a toothpick inserted in the center comes out with just a few crumbs clinging. Then set the bars aside to cool thoroughly — patience here makes all the difference.

Step 8: Prepare the Frosting

Beat the softened butter on medium-high speed until it’s fluffy, then gradually add the sifted powdered sugar, increasing speed as you go to keep it light and airy. Mix in vanilla, heavy cream, and a pinch of salt until the frosting reaches a creamy, spreadable consistency. If needed, add a splash more cream to perfect it.

Step 9: Color and Decorate

Divide the frosting into three bowls, then mix pink, purple, and teal gel food coloring into each. Spoon dollops over the cooled bars and gently swirl with an offset spatula to create a stunning marbled effect. Don’t overmix to keep colors vibrant and distinct. Lastly, sprinkle generously with assorted decorative sprinkles for a charming party-ready finish.

Step 10: Cut and Enjoy

Use the parchment paper edges to lift the entire pan out once the frosting sets. Cut your funfetti bars into squares or rectangles, and prepare for a colorful, chewy bite of happiness.

How to Serve Chewy Funfetti Bars from Scratch (No Cake Mix) Recipe

A rectangular white baking dish holds a thick, golden-brown baked cake layer with a slightly rough texture and colorful sprinkles embedded inside. On top, there are several dollops of smooth, fluffy frosting in pastel colors—light pink, mint green, and soft lavender—spread unevenly across the surface, adding pops of delicate color over the warm cake base. The dish sits on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Garnishes

To elevate the fun, add a handful of extra sprinkles right before serving for an eye-catching sparkle and crunch. Tiny edible pearls or star-shaped sprinkles can make these bars feel even more special and festive.

Side Dishes

These funfetti bars pair beautifully with a simple glass of cold milk, a scoop of vanilla ice cream, or even a fresh berry salad to brighten the palate. The creamy and colorful notes make them a great match for creamy or fruit-forward sides.

Creative Ways to Present

Try arranging the bars on a bright serving platter sprinkled with additional confetti sprinkles or edible glitter. For parties, serve the bars alongside matching pastel macarons or cupcakes, enhancing the jubilant theme. Wrapping individual squares in decorative parchment or placing them into colorful cupcake liners makes for darling favors or lunchbox treats.

Make Ahead and Storage

Storing Leftovers

Store any leftover funfetti bars in an airtight container at room temperature for up to 3 days to maintain that chewy softness and fresh frosting. If your kitchen is warm, consider refrigeration, though bring the bars to room temperature before serving to enjoy the best texture.

Freezing

You can freeze unfrosted bars tightly wrapped in plastic wrap and then foil for up to 3 months. When ready to enjoy, thaw overnight in the fridge and then frost just before serving to keep the toppings fresh and vibrant.

Reheating

While these bars are delightful chilled or at room temperature, if you prefer a warm treat, pop a bar in the microwave for 10-15 seconds. This will soften the chewiness and make the frosting slightly melty — a cozy way to indulge!

FAQs

Can I use regular sprinkles instead of rainbow ones?

Absolutely! Any kind of non-melting sprinkles will work beautifully here. Just avoid chocolate or large candies that might affect the baking texture.

Is it possible to make these bars gluten-free?

Yes, you can substitute the all-purpose flour with a gluten-free flour blend with baking powder and baking soda included. Just be sure to test the batter’s consistency and bake time as it might vary slightly.

What if I want a different frosting flavor?

Feel free to add citrus zest, cocoa powder, or almond extract to the buttercream for a unique twist. Vanilla is classic, but experimentation is always welcome with these bars!

How thick should I spread the batter in the pan?

The batter will be quite thick; press it evenly into the pan but avoid making it too thin. About an inch thick is perfect for achieving that chewy texture without drying out.

Can I make these bars vegan?

To make a vegan version, use plant-based butter and a flax egg substitute (1 tbsp ground flaxseed + 3 tbsp water per egg). Keep in mind the texture may vary slightly, but the flavor will still be delightful!

Final Thoughts

There is something truly special about homemade treats, and these Chewy Funfetti Bars from Scratch (No Cake Mix) Recipe is a shining example. Vibrant, chewy, and bursting with joyful sprinkles and colors, these bars are bound to brighten any occasion and bring smiles around the table. Don’t hesitate to try them out and share the funfetti love — baking from scratch has never been more cheerful or satisfying.