Name: Unicorn Funfetti Cake Mix Bars with Colorful Cream Cheese Frosting Recipe
Prep time: 10 min
Cook time: 25 min
Total time: 40 min
Cuisine: American
Ingredients: 15.25 ounces box funfetti cake mix; 1 large egg; ½ cup salted butter (1 stick), melted; ½ cup heavy cream; 8 ounces cream cheese (room temperature); ½ cup salted butter (1 stick), room temperature; 3½ cups powdered sugar; 1-3 tablespoons heavy cream; 1 teaspoon vanilla extract; Purple and blue food coloring; Sprinkles (optional garnish)

Print Recipe· 4.3 from 12 reviews

If you are craving a dessert that dances with color and bursts with playful flavor, the Unicorn Funfetti Cake Mix Bars with Colorful Cream Cheese Frosting Recipe is the answer you’ve been waiting for. These bars are a delightful twist on classic funfetti treats, combining a moist, buttery base with a luscious, creamy frosting tinted in vibrant pastel hues. Perfect for parties, celebrations, or just a joyful pick-me-up, this recipe brings magic to your kitchen with every bite.

Ingredients You’ll Need

A top view of six baking ingredients arranged on a white marbled surface: in the top left, a clear plastic bag filled with white Funfetti cake mix with small colorful sprinkles inside; at the top right, two sticks of pale yellow butter stacked; below the butter, a small white bowl holding a brown vanilla liquid; in the center left, a rectangular block of smooth white cream cheese set on a white plate; next to it on the right, a brown egg in a small white bowl; at the bottom left, a small white pitcher filled with heavy cream; and at the bottom right, a wooden bowl filled with fine white powdered sugar. photo taken with an iphone --ar 4:5 --v 7

The beauty of this recipe is in its simplicity and thoughtful selection of ingredients, each playing a crucial role in crafting the perfect texture, sweetness, and color that make these bars unforgettable.

15.25 ounces funfetti cake mix: The colorful confetti sprinkles in the mix give the bars their signature rainbow speckles and delightful bursts of sweetness.
1 large egg: Binds the ingredients while adding richness for a tender crumb.
½ cup salted butter (1 stick), melted: Adds moisture and depth of buttery flavor, ensuring the bars are moist and flavorful.
½ cup heavy cream: Helps create a slightly richer batter with added moisture and softness.
8 ounces cream cheese, room temperature: Gives the frosting a tangy creaminess that balances the sweetness perfectly.
½ cup salted butter (1 stick), room temperature: Provides structure and smoothness to the frosting.
3½ cups powdered sugar: Sweetens the frosting and creates that irresistible fluffy texture.
1-3 tablespoons heavy cream: Adjusts the frosting’s consistency for perfect spreadability.
1 teaspoon vanilla extract: Brings warmth and depth to the frosting’s flavor.
Purple and blue food coloring: Adds those whimsical, magical hues that make this unicorn-inspired dessert truly stand out.
Sprinkles (optional): A final flourish to amp up the festive look and add an extra crunch.

How to Make Unicorn Funfetti Cake Mix Bars with Colorful Cream Cheese Frosting Recipe

Step 1: Prepare the Pan and Preheat the Oven

Begin by preheating your oven to 350 degrees Fahrenheit. Then, lightly grease a 9×13 inch pan or line it with parchment paper. This step ensures your bars will come out clean and whole with ease after baking, setting you up for a successful dessert adventure.

Step 2: Mix the Base Ingredients

In a large bowl, combine the funfetti cake mix, egg, melted butter, and heavy cream. Stir until everything is incorporated into a smooth batter bursting with colorful sprinkles. This simple mixture forms the foundation of your bars, balancing moisture and structure beautifully.

Step 3: Bake to Perfection

Spread the batter evenly into your prepared pan. Bake for 20 to 25 minutes until a toothpick inserted in the center comes out clean, signaling that your bars have set perfectly without drying out. The edges will be lightly golden, and the cake will emit that warm, inviting aroma.

Step 4: Cool Completely

Patience is key here—allow your bars to cool fully in the pan. This step is crucial because it lets the bars firm up, so your colorful cream cheese frosting will glide on smoothly without melting or sliding off.

Step 5: Whip Up the Cream Cheese Frosting

Using a hand or stand mixer, beat together the cream cheese and room temperature butter until luxuriously smooth and creamy. Then gradually add powdered sugar, half a cup at a time, beating it in to maintain a fluffy texture. Incorporate heavy cream and vanilla, a tablespoon at a time, to achieve that perfect spreadable consistency that makes frosting so irresistible.

Step 6: Add the Magic of Color

Divide the frosting into two separate bowls. Use your purple and blue food coloring to tint each bowl of frosting until you reach dazzling shades. The colorful layers of frosting are what make this recipe stand out as a cheerful celebration in dessert form.

Step 7: Frost and Swirl Your Bars

Alternately spread the purple and blue frostings over the cooled bars. Use a spoon or flat spatula to gently swirl the colors together, creating a dreamy marbled effect that’s sure to impress.

Step 8: Add Sprinkles and Serve

For that final touch of whimsy, sprinkle your favorite rainbow sprinkles over the frosting. Once decorated, slice into bars and prepare for an instant smile-inducing treat.

How to Serve Unicorn Funfetti Cake Mix Bars with Colorful Cream Cheese Frosting Recipe

The image shows a rectangular baked cake with a golden-brown color as the base layer, placed inside a metal baking tray. On top of the cake, there are large dollops of frosting in two colors: bright turquoise and pastel purple. These dollops are spread unevenly but cover most of the surface of the cake, with the turquoises and purples alternating in a random pattern. The texture of the frosting looks soft and creamy with visible swirls and peaks. The whole tray is set on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Garnishes

While the sprinkles add a festive buzz, you can also experiment with edible glitter, mini candy pearls, or even tiny edible flowers. These trendy touches elevate the presentation and add an extra pop that’s as delightful to the eyes as it is to the taste buds.

Side Dishes

Pair these colorful bars with a scoop of vanilla or cotton candy-flavored ice cream for a dreamy dessert duo. Fresh fruit like strawberries or raspberries also bring a refreshing contrast to the rich, sweet flavors, balancing the experience perfectly.

Creative Ways to Present

Serve these bars on bright, whimsical plates or in clear glass trays to showcase their vibrant frosting swirls. For parties, try stacking smaller cut pieces on tiered cake stands or arranging them alongside matching themed cupcakes to create an enchanting dessert table centerpiece.

Make Ahead and Storage

Storing Leftovers

Store any uneaten bars in an airtight container in the refrigerator. This keeps the cream cheese frosting fresh and luscious for up to five days. Let them come to room temperature before serving for the best texture and flavor.

Freezing

You can freeze these bars by wrapping them tightly in plastic wrap, then placing in a freezer-safe container. They freeze beautifully for up to two months. When ready to enjoy, thaw in the fridge overnight to maintain their moist texture and creamy frosting.

Reheating

If you want to warm the bars slightly, pop a piece in the microwave for about 10-15 seconds. This softens the cake and frosting just enough to enhance their gooey goodness without melting the frosting completely.

FAQs

Can I use a different cake mix flavor?

Absolutely! While funfetti is ideal for that classic sprinkle-filled magic, you can experiment with vanilla or even a lemon cake mix for a new twist. Just keep in mind that different flavors might slightly change the visual and taste experience.

Is it necessary to use both butter and heavy cream in the batter?

Yes, the melted butter adds richness and moisture while the heavy cream helps keep the bars tender and soft. They work in harmony to create the perfect cakey texture.

How do I get the frosting colors to stay vibrant?

Use gel-based food coloring instead of liquid food coloring. Gels provide more intense colors without thinning out the frosting, which helps maintain the perfect spreadable consistency.

Can I make this recipe dairy-free?

For a dairy-free version, substitute butter with a dairy-free margarine and use vegan cream cheese. Make sure the cake mix ingredients are also free from dairy to fully accommodate dietary needs.

What’s the best way to cut the bars without smudging the frosting?

Chill the bars briefly in the fridge to firm up the frosting before slicing. Use a sharp knife and wipe it clean between cuts for neat, clean edges every time.

Final Thoughts

You really can’t go wrong with the Unicorn Funfetti Cake Mix Bars with Colorful Cream Cheese Frosting Recipe when you want to add some fun, color, and incredible flavor to your day. It’s a recipe that brings joy with every step, from mixing to swirling those gorgeous frostings. Give it a try—you’ll find it hard to keep these magical bars from disappearing in no time at all!