Homemade Funfetti Cake is a joyous treat that evokes childhood memories and brings a splash of color to any gathering. The delightful combination of soft, fluffy cake and vibrant rainbow sprinkles makes this dessert a favorite for birthdays, celebrations, or just a sweet craving. It’s not just a cake; it’s a reason to smile, to gather around the table with loved ones, and share joy in every bite. Every slice reveals pockets of colorful sprinkles, making it a visual delight that tastes as good as it looks.

Table of Contents

Why You’ll Love This Recipe
Ingredients You’ll Need
How to Make Homemade Funfetti Cake
Storing & Reheating
Chef’s Helpful Tips
Recipe FAQs
Homemade Funfetti Cake

I still remember the first time I celebrated a friend’s birthday with a funfetti cake. The excitement of seeing those little specks of color as I cut into the cake instantly lifted the spirits of everyone around the table. Now, you don’t have to settle for store-bought versions that lack that homemade charm. This Homemade Funfetti Cake recipe is quick, simple, and perfectly sweet, filling your kitchen with a warm, buttery aroma. You’ll find yourself reaching for another slice before you even realize it. I’m so excited for you to try this recipe!

Why You’ll Love This Recipe

Simple & Quick: Just 15 minutes to prepare and only an hour to bake. You’re closer to cake time than you think!
Irresistible Flavor: A tender cake bursting with buttery goodness and a hint of vanilla, all with the delightful crunch of sprinkles.
Eye-Catching Appeal: The colorful sprinkles make it perfect for celebrations and brightening up any dessert table.
Flexible Serving: Ideal for birthdays, bridal showers, or simply to satisfy your sweet tooth any day of the week.
Customizable Options: Easily adapt it into cupcakes or layered cakes for even more fun with frosting!

Ingredients You’ll Need

2 cups (248g) all-purpose flour: This forms the base of the cake, creating a soft structure. Make sure to spoon and level your flour for accuracy.
2 teaspoons baking powder: This leavening agent gives the cake its light, airy texture. Fresh baking powder matters for rise.
¾ teaspoon salt: Enhances flavors, balancing the sweetness. Don’t skip it!
1 cup (226g) unsalted butter, melted: Provides richness and moisture. Using unsalted lets you control the saltiness.
1 ½ cups (300g) granulated sugar: Sweetens the cake beautifully. Granulated sugar dissolves well for that tender crumb.
4 large eggs: Binds the ingredients together and adds moisture. Room temperature eggs incorporate more easily.
1 teaspoon vanilla extract: Adds a warm, inviting flavor; pure vanilla is best for depth.
1 cup (237ml) buttermilk: This adds tanginess and helps with moisture, keeping the cake tender. You can substitute with milk plus a splash of vinegar if needed.
1 cup (225g) rainbow sprinkles: These are the star of the show! Use classic sprinkles for that nostalgic feel.
1 cup (226g) unsalted butter, softened: Used for the frosting, creating a creamy texture. Allow it to come to room temperature for optimal mixing.
4 cups (452g) powdered sugar: This sweetens and thickens the frosting. Sift it for a smoother consistency.
1 teaspoon (15 ml) vanilla extract: Mirrors the cake flavor, adding consistency in taste.
½ teaspoon salt: Helps balance out the sweetness in the frosting.
2-5 tablespoons (30-75ml) heavy whipping cream: Adjusts the frosting’s texture—more for a creamier, smoother finish.
½ cup (112g) sprinkles plus more for topping: A joyful addition to your frosting! Feel free to use a mix of colors for an extra pop.

How to Make Homemade Funfetti Cake

Preheat the oven: Begin by preheating your oven to 350°F (175°C). Grease and flour a 9×13-inch baking pan to prevent sticking.
Prepare the dry ingredients: In a medium bowl, whisk together the 2 cups all-purpose flour, 2 teaspoons baking powder, and ¾ teaspoon salt. Set this mixture aside for later.
Cream the butter and sugar: In a large mixing bowl, use a hand or stand mixer to mix the 1 cup melted unsalted butter and 1 ½ cups granulated sugar until smooth and fluffy.
Add eggs and vanilla: Incorporate the 4 large eggs one at a time, ensuring each is mixed well, then stir in 1 teaspoon vanilla extract until combined.
Combine wet and dry ingredients: Gradually add the 1 cup buttermilk and the flour mixture to the butter and sugar mixture. Alternate between adding them: start and end with buttermilk. Mix on medium speed, just until combined—don’t overmix!
Stir in sprinkles: Carefully fold in 1 cup rainbow sprinkles, ensuring they’re evenly distributed throughout the batter.
Bake: Pour your batter into the prepared pan, smoothing the top lightly. Bake for 30-40 minutes, or until a toothpick inserted comes out clean. The cake should be golden around the edges. Allow it to cool completely before frosting.
Prepare the frosting: Beat 1 cup softened unsalted butter in a mixing bowl until creamy. Gradually add in the 4 cups powdered sugar, one cup at a time. Once crumbly, mix in 1 teaspoon vanilla extract and ½ teaspoon salt. Add 2 tablespoons heavy whipping cream, mixing until smooth. Add more cream as needed to reach your desired frosting consistency.
Frost your cake: Once the cake is cool, generously frost it with your cream, using an offset spatula for even spreading. Top with ½ cup sprinkles and extra for decoration.

Storing & Reheating

To store any leftover Homemade Funfetti Cake, keep it loosely covered at room temperature for up to 2 days. If you want to extend its life, refrigerate it in an airtight container for up to a week. For longer storage, freezing is a great option; wrap individual slices tightly in plastic, then foil, and store them in a freezer-safe bag for up to 3 months. When ready to enjoy, you can simply let it thaw at room temperature for a few hours or pop it in the microwave for a few seconds to bring back its original texture.

Chef’s Helpful Tips

Ensure your butter is melted but not hot. Hot butter can affect the batter negatively, making it greasy.
Make sure your eggs and buttermilk are at room temperature for better incorporation into the batter.
Avoid overmixing once the flour is added; this helps keep your cake light and fluffy.
If using a dark cake pan, reduce the baking time slightly to avoid over-browning.
Feel free to swap out the sprinkles for mini chocolate chips or nuts for variation.

There’s something incredibly satisfying about creating a cake that fills the room with happiness. Whether it’s for a birthday surprise, celebration, or a simple treat, Homemade Funfetti Cake is sure to please. The soft, tender layers and delightful sprinkles make this a dessert worthy of any occasion! Don’t hesitate to experiment, perhaps with different flavors or colors of sprinkles to make it uniquely yours.

Recipe FAQs

Can I make this cake gluten-free?

Yes, you can substitute the all-purpose flour with a gluten-free flour blend. Make sure it includes xanthan gum, which helps bind the ingredients together.

How do I make cupcakes instead of a cake?

To transform this recipe into cupcakes, simply pour the batter into cupcake liners in a muffin tin and bake at the same temperature for about 18-20 minutes. Keep an eye on them, as baking time can vary!

What can I substitute for buttermilk?

If you don’t have buttermilk on hand, you can make your own by mixing 1 cup of milk with 1 tablespoon of white vinegar or lemon juice. Let it sit for about 5-10 minutes until thickened.

How do I enhance the flavor of the cake?

Consider adding some almond extract alongside the vanilla for a delightful twist. You can also infuse the batter with a zest of lemon or orange for added freshness.

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Homemade Funfetti Cake

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Author: Peter
Prep Time: 15 minutes
Cook Time: 55 minutes
Total Time: 1 hour 10 minutes
Yield: 24 servings 1x
Category: Desserts
Method: Baking
Cuisine: American

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Description

This Homemade Funfetti Cake is bursting with color and flavor, featuring a delightful mix of butter, eggs, and rainbow sprinkles. It’s a fun and simple treat that brings joy to any gathering, perfect for birthdays or special occasions!

Ingredients

Scale

2 cups (248g) all-purpose flour
2 teaspoons baking powder
¾ teaspoon salt
1 cup (226g) unsalted butter, melted
1 ½ cups (300g) granulated sugar
4 large eggs
1 teaspoon vanilla extract
1 cup (237ml) buttermilk
1 cup (225g) rainbow sprinkles
1 cup (226g) unsalted butter, softened
4 cups (452g) powdered sugar
1 teaspoon (15 ml) vanilla extract
½ teaspoon salt
2–5 tablespoons (30-75ml) heavy whipping cream
½ cup (112g) sprinkles plus more for topping

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Instructions

Preheat the oven to 350°F and prepare a 9×13-inch baking pan by greasing and flouring it.
In a medium bowl, whisk together flour, baking powder, and salt, then set the mixture aside.
In a large bowl, use a mixer to blend melted butter and sugar on medium speed until smooth. Add eggs one at a time, followed by the vanilla extract.
Incorporate the buttermilk alternately with the dry mixture, mixing on medium-high speed, starting and finishing with buttermilk. Make sure to scrape the sides of the bowl during mixing, then fold in the sprinkles.
Transfer the batter to the prepared pan and bake for 30-40 minutes, or until a toothpick comes out clean. Let it cool completely before frosting.
For the frosting, beat softened butter until creamy. Gradually mix in the powdered sugar, one cup at a time, until a crumbly mixture forms. Then add vanilla and salt, followed by 2 tablespoons of heavy cream; mix until smooth, adjusting with more cream as necessary, and stir in sprinkles.
Frost the cooled cake with the frosting and decorate with additional sprinkles. It's easiest to use an offset spatula for spreading. Store the cake loosely covered for up to 2 days.
This recipe also makes 24 cupcakes, two 9-inch round cakes, or three 8-inch round cakes.

Notes

Ensure the butter is fully melted before combining with sugar for a smooth batter.
Allow the cake to cool completely before frosting to prevent the frosting from melting.
Feel free to customize the amount of sprinkles in the frosting and on top based on your preference.