You won't need to buy a cake mix anymore after you try this Funfetti Cake and Buttercream Frosting. So easy and has the best frosting EVER!
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If you love vanilla cake or boxed funfetti cake mix, then you are going to love this delicious Homemade Funfetti Cake with all the rainbow sprinkles you can handle!
You won’t even need any special cake flour for this confetti cake to make the best cake batter for this homemade cake.
So, when you are ready to make the perfect cake for your next birthday party, or really for any day that you just feel the need to eat a sprinkle cake. Whether you want a piece or the entire cake, you have found the best homemade funfetti cake recipe!
Recipe Ingredient Notes
To make Funfetti Cake and Buttercream Frosting, you will need the following ingredients:
Homemade Funfetti Cake
- All-purpose flour
- Baking powder
- Baking soda
- Salt
- Sugar
- Light brown sugar
- Unsalted butter, melted
- Large whole eggs
- Sour cream
- Milk
- Vanilla extract
- Sprinkles (not nonpareils) or Rainbow jimmies
Vanilla Buttercream Frosting
- Unsalted butter 2 sticks, softened to room temperature
- Powdered sugar
- Half-and-half or heavy cream
- Vanilla extract
- Salt
Equipment Needed
For this recipe, you only need a few simple kitchen tools. We recommend using the following equipment:
- Baking Dish (9 Inch Square)
- Mixing Bowl (Medium)
- Mixing Bowl (Large)
- Whisk
- Aluminum Foil
- Mixing Bowl
How to make Homemade Funfetti Cake:
Homemade Funfetti Cake
- Preheat oven to 350℉. Spray a 9-inch baking pan (round or square) with nonstick cooking spray. Set aside.
- In a medium bowl, mix together flour, baking powder, baking soda and salt. Set aside.
- In a large bowl, melt butter in the microwave. Whisk in the sugars getting out all lumps (mixture will be gritty). Whisk in egg, sour cream, milk and vanilla until combined.
- Slowly mix in dry ingredients until no lumps remain. Stir in sprinkles, but don’t overmix to avoid sprinkles bleeding their color.
- Pour batter into prepared cake pan. Bake for 20 minutes. Remove from oven and cover loosely will aluminum foil. Bake for 13-17 more minutes or until a toothpick comes out clean. Cool completely.
Frosting
- Beat softened butter on medium speed for three minutes, until smooth and creamy.
- Add powdered sugar, half and half, vanilla extract and a dash of salt. Continue to beat frosting on high for 3 minutes.
- Add more or less powdered sugar to reach desired consistency. Frost cool cake as desired and top with sprinkles.
How to store the best funfetti cake:
The homemade version of this funfetti birthday cake stores perfectly in a cake airtight container and store at room temperature.
Enjoy More Delicious Sheet Cake Recipes
Some days there’s nothing we want more than a slice of chocolate cake. Check out our comprehensive list of cake recipes here.
- Carrot Cake
- Cinnamon Zucchini Cake with Cream Cheese Frosting
- Frosted Strawberry Sheet Cake
- Peanut Butter Sheet Cake
Homemade Funfetti Cake and Buttercream Frosting Recipe
You won't need to buy a cake mix anymore after you try this Funfetti Cake and Buttercream Frosting. So easy and has the best frosting EVER!
Serving Servings
Ingredients
Homemade Funfetti Cake
- 1 ⅔ cups all-purpose flour
- ½ teaspoon baking powder
- ¼ teaspoon baking soda
- ½ teaspoon salt
- ¾ cup sugar
- ¼ cup light brown sugar
- ½ cup unsalted butter, 1 stick, melted
- 1 large egg
- ¼ cup sour cream
- ¾ cup milk
- 1 Tablespoon vanilla extract
- ⅔ cup sprinkles, (not nonpareils)
Vanilla Buttercream Frosting
- 1 cup unsalted butter, 2 sticks, softened to room temperature
- 4 cups powdered sugar
- ¼ cup half-and-half, or heavy cream
- 2 ½ teaspoons vanilla extract
- dash of salt
Equipment
Instructions
Homemade Funfetti Cake
- Preheat oven to 350℉. Spray a 9-inch baking pan (round or square) with nonstick cooking spray. Set aside.
- In a medium bowl, mix together flour, baking powder, baking soda and salt. Set aside.
- In a large bowl, melt butter in the microwave. Whisk in the sugars getting out all lumps (mixture will be gritty). Whisk in egg, sour cream, milk and vanilla until combined.
- Slowly mix in dry ingredients until no lumps remain. Stir in sprinkles, but don't overmix to avoid sprinkles bleeding their color.
- Pour batter into prepared cake pan. Bake for 20 minutes. Remove from oven and cover loosely will aluminum foil. Bake for 13-17 more minutes or until a toothpick comes out clean. Cool completely.
Frosting
- Beat softened butter on medium speed for three minutes, until smooth and creamy.
- Add powdered sugar, half and half, vanilla extract and a dash of salt. Continue to beat frosting on high for 3 minutes.
- Add more or less powdered sugar to reach desired consistency. Frost cool cake as desired and top with sprinkles.
Notes
The homemade version of this funfetti birthday cake stores perfectly in a cake airtight container and store at room temperature.
Nutrition
Calories: 562 kcal · Carbohydrates: 80 g · Protein: 3 g · Fat: 26 g · Saturated Fat: 16 g · Trans Fat: 1 g · Cholesterol: 81 mg · Sodium: 161 mg · Potassium: 74 mg · Fiber: 1 g · Sugar: 65 g · Vitamin A: 801 IU · Vitamin C: 1 mg · Calcium: 54 mg · Iron: 1 mg
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