Rainbow Sprinkled Buttercream

There’s an undeniable joy that sprinkles bring to any dessert. They instantly elevate the simplest frosting into a festive, fun-filled celebration. This delightful funfetti buttercream recipe is your ticket to transforming ordinary cakes, cupcakes, cookies, and various baked goods into vibrant, party-ready masterpieces, promising a burst of color and a smile with every bite.

Swirl of buttercream frosting with colorful sprinkles throughout.
Elevate your desserts with this vibrant funfetti buttercream!

Unleash the Fun: The Magic of Funfetti Buttercream Frosting

Sprinkles just have that magical quality of screaming “fun!” Adding them to a classic vanilla buttercream takes your dessert experience from delightful to absolutely extraordinary. This isn’t just frosting; it’s a celebration in a bowl, ready to bring cheer to any occasion.

I recently had the pleasure of whipping up a batch of this vibrant frosting when my cookie cake-loving sister came to town. We wanted a special treat to mark her visit, and what better way to celebrate than with sprinkle-filled cookie bars? These bars boast a soft, tender texture reminiscent of classic lofthouse cookies, making them the perfect canvas for a generous, thick layer of frosting.

While a simple spread of traditional American buttercream topped with a handful of sprinkles would have been lovely, my little one and I decided to go all out. We thought, why not put the sprinkles inside the frosting too? We started with a robust crusting buttercream as our base, then gently folded in an abundance of jimmies-style sprinkles. The result was a spectacularly fun frosting, bursting with cheerful specks of color throughout every creamy spoonful. It’s incredibly simple to make, tastes absolutely divine, and instantly elevates any baked good to a whole new level of deliciousness and visual appeal.

Bowl of buttercream with pile of sprinkles inside, ready to be mixed together.
Sprinkles waiting to be folded into creamy buttercream.
Sprinkles mixed into frosting to make funfetti buttercream.
The magic of funfetti buttercream coming to life as sprinkles are mixed in.

Beyond Cookie Bars: Endless Possibilities for Funfetti Frosting

While this funfetti buttercream was undeniably perfect on our soft sugar cookie bars, its versatility knows no bounds. Imagine it generously slathered over your favorite birthday cake, turning a simple dessert into a show-stopping centerpiece. Or, for a playful twist, pipe a dollop between two chewy chocolate chip cookies to create an irresistible dessert sandwich that will be devoured in minutes. The possibilities truly are endless, from topping classic vanilla cupcakes to enhancing brownies or even filling whoopie pies. And of course, the rich, homemade flavor of this buttercream vastly surpasses any store-bought canned alternative, offering a superior taste and texture that truly shines.

Mastering Your Funfetti Buttercream: Essential Tips and Tricks

Crafting this easy funfetti frosting is a wonderfully straightforward process, making it an ideal recipe for bakers of all skill levels, from beginners to seasoned pros. It’s incredibly forgiving, allowing for minor adjustments as you go. Follow these tips to ensure your buttercream turns out perfectly every time:

  • Start with Softened Butter: The first and perhaps most crucial step is to ensure your butter is adequately softened. This means it should be pliable enough to yield to gentle pressure but not melted or greasy. Cold butter will lead to a lumpy, inconsistent frosting, while overly warm butter can result in a soupy texture. Room temperature butter will cream beautifully, creating a smooth, fluffy base without any unwanted chunks.
  • Achieve the Right Consistency Before Sprinkles: After creaming your butter and shortening, and incorporating the powdered sugar, milk, and vanilla, focus on achieving your desired frosting consistency. I personally prefer a slightly softer frosting for easy spreading on cakes and bars, while a stiffer consistency is ideal for intricate piping designs. Beat the mixture on medium speed for at least two minutes to incorporate air, making it light and fluffy. Adjust by adding a tiny bit more milk for a thinner consistency or a spoonful of powdered sugar for a thicker one. This step is key because once the sprinkles are added, further vigorous mixing can break them down.
  • Gentle Folding for Intact Sprinkles: Once your base frosting has reached its perfect consistency, it’s time for the fun part: adding the sprinkles! Crucially, fold them in by hand using a spatula. This gentle motion helps to keep the sprinkles whole and vibrant, preventing them from bleeding their color or dissolving into the buttercream. A minute or two of careful folding is all it takes to distribute the colorful jimmies evenly throughout your festive frosting.
  • Choose the Right Sprinkles: Not all sprinkles are created equal! For funfetti buttercream, jimmies (the long, cylindrical sprinkles) are generally preferred because they hold their shape better and are less prone to bleeding color compared to nonpareils (tiny, round balls). High-quality sprinkles will maintain their vibrant hues even when folded into the frosting.
  • Piping with Sprinkles: If you plan to pipe your funfetti buttercream, select a piping tip with a large opening. An open star tip or a round tip with a wide diameter works wonderfully. Smaller tips will inevitably get clogged by the sprinkles, leading to frustration and an uneven design. Save yourself the headache and choose wisely!
Spatula filled with colorful sprinkle funfetti frosting.
A spatula showcasing the vibrant specks of funfetti frosting.
Piped swirl of funfetti frosting.
Perfectly piped funfetti frosting, ready for any dessert.

Ingredient Spotlight: What Makes This Frosting Special?

  • Butter & Shortening Combo: This recipe calls for a blend of butter and shortening. Butter provides rich flavor, while shortening contributes to a sturdy, stable frosting that crusts nicely, making it perfect for decorating and holding its shape, especially in warmer environments. It also helps achieve that desirable fluffy texture.
  • Powdered Sugar: The backbone of any American buttercream, powdered sugar (confectioners’ sugar) gives the frosting its sweetness and smooth texture. Sifting it can help prevent lumps, though a good beating often takes care of that too.
  • Vanilla Extract: Pure vanilla extract is essential for that classic, comforting flavor profile. Don’t skimp on quality here; it makes a noticeable difference. You can also experiment with other extracts like almond or cake batter for different flavor twists.
  • Milk: Just a few tablespoons of milk help achieve the perfect creamy consistency. You can use any type of milk you prefer, or even heavy cream for a richer texture.
  • Rainbow Sprinkles (Jimmies): The star of the show! As mentioned, jimmies are best for their shape retention and minimal color bleed.

Troubleshooting Common Frosting Issues

  • Too Thick? If your frosting feels too stiff or difficult to spread, add milk one teaspoon at a time until the desired consistency is reached. Mix well after each addition.
  • Too Thin? If your frosting is too runny, gradually add more powdered sugar, a tablespoon at a time, until it thickens up.
  • Grainy Texture? This usually means the powdered sugar hasn’t fully dissolved or the butter wasn’t soft enough. Continue beating the frosting for a few more minutes on medium-high speed. The friction and air incorporation will often smooth it out.
Piece pulled out from a big batch of soft sugar cookie bars with sprinkles.
Soft sugar cookie bars adorned with festive funfetti buttercream.
Hand holding a soft sugar cookie bar filled with colorful sprinkles.
Enjoying a delightful funfetti sugar cookie bar, complete with colorful sprinkles.

Storage and Re-whipping

One of the best qualities of buttercream is its make-ahead potential. Store leftover buttercream in an airtight container at room temperature for up to two days. For longer storage, refrigerate it for up to a week or freeze it for several months. When ready to use chilled or frozen frosting, allow it to come to room temperature, then re-whip it with a paddle attachment for a few minutes until it’s light and fluffy again. You might need to add a splash of milk to restore its smooth consistency.

Swirl of buttercream frosting with colorful sprinkles throughout.




4.86 from 48 ratings

Funfetti Buttercream Frosting

Author:

Carlee
Servings:

24
Servings

Funfetti buttercream is a tasty vanilla frosting loaded with colorful sprinkles. It is a perfect way to coat cake layers, cookie bars, or funfetti cupcakes. The rainbow jimmies make this frosting extra fun for birthdays and special occasions.

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Prep:

10

Cook:

0

Total:

10

Ingredients

  • ¾
    cup
    butter
    softened
  • ¾
    cup
    shortening
  • 5
    cups
    powdered sugar
  • 2
    teaspoons

    vanilla extract
  • 4
    Tablespoons
    milk
  • ¼
    cup
    rainbow sprinkles

Instructions

  1. Beat butter using a paddle attachment until it is smooth and creamy. Add shortening and mix until combined.
    ¾ cup butter, ¾ cup shortening
  2. Add powdered sugar, milk, and vanilla, mixing on low speed until combined.
    5 cups powdered sugar, 4 Tablespoons milk, 2 teaspoons vanilla extract
  3. Turn mixer up to medium speed and beat for at least two minutes. The frosting should be light and fluffy. Add more milk or powdered sugar if necessary to reach your desired consistency.
  4. Fold in the sprinkles by hand to keep them from breaking up too much and use on your favorite desserts.
    ¼ cup rainbow sprinkles

Notes

Buttercream can be stored in an airtight container at room temperature for a day or two. Store it in the refrigerator for up to a week or the freezer for several months. Re-whip before use.

Nutrition Information

Serving: 1 Serving | Calories: 210kcal | Carbohydrates: 24g | Fat: 13g | Saturated Fat: 6g | Polyunsaturated Fat: 6g | Cholesterol: 19mg | Sodium: 47mg | Sugar: 24g


“Cooking With Carlee” is not a dietitian or nutritionist, and any nutritional information shared is an estimate. If calorie count and other nutritional values are important to you, we recommend running the ingredients through whichever online nutritional calculator you prefer. Calories and other nutritional values can vary quite a bit depending on which brands were used.

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