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A confetti bundt cake with vanilla buttercream on a pink cake stand.

Confetti Bundt Cake

5 from 4 votes
Moist and fluffy vanilla cake, lots of sprinkles and a whipped vanilla buttercream.
Servings 20

Ingredients

FOR THE CAKE

  • 1 cup (226 g) unsalted butter room temperature
  • 1 3/4 cups (350 g) granulated sugar
  • 1/3 cup (72.6 g) vegetable oil
  • 3 large whole eggs room temperature
  • 3 large egg whites room temperature
  • 1/4 cup (60 g) sour cream room temperature
  • 3 cups (345 g) cake flour
  • 1 tablespoon (14 g) baking powder
  • 1 teaspoon (6 g) salt
  • 1 cup (240 g) buttermilk room temperature
  • 1 tablespoon (12 g) vanilla extract
  • 1/4 cup (40g) rainbow sprinkles

FOR THE BUTTERCREAM

  • 2 cups (452 g) unsalted butter chilled (I take the butter out of the fridge 30 minutes before I make my frosting)
  • 6 cups (750 g) powdered sugar measured then sifted
  • 4 tablespoons (57.75 g) heavy whipping cream
  • 2 teaspoons (8.4 g) clear vanilla extract
  • *This buttercream recipe makes enough to fill and cover your cake. If you want to add additional piping, you’ll want to make an extra 1/2 batch.

Instructions

FOR THE CAKE

  • Preheat the oven to 325 degrees F. Prepare a 12-cup nonstick bundt pan by spraying it with nonstick spray and then coating the sides with flour. Set aside.
  • In a medium size bowl, whisk together the cake flour, baking powder and salt. Set aside.
  • In the bowl of a stand mixer, fitted with the paddle attachment, beat the butter, oil, and sugar on high until fluffy and smooth, about 5 minutes.
  • Add the eggs and the egg whites, one at a time to the bowl and beat on medium until well incorporated. Add the sour cream and beat on medium speed for a minute or so. It may look curdled, don't stress.
  • Turn the mixer on low and add 1/3 of the flour mixture to the butter mixture and mix until fully incorporated. Then add half of the buttermilk and blend well, followed by another 1/3 of the flour mixture, the second half of the buttermilk and lastly, add the remaining flour mixture and mix until incorporated.
  • Add the vanilla extract and beat on low until incorporated. Scrape down the sides of the bowl and mix on low for another 30 seconds. Fold in the sprinkles.
  • Pour the cake batter into the prepared bundt pan and bake for 50 to 60 minutes. The cake is done when a toothpick inserted in the center of the cake comes out with a few moist crumbs on it.
  • Let the bundt pan cool completely in the pan before inverting onto your cake stand.

FOR THE BUTTERCREAM:

  • In the bowl of a stand mixer fitted with a paddle attachment, cream the butter for about 2 minutes. This will soften the butter without it having to be warm.
  • With the mixer on low speed, gradually add the sifted powdered sugar, one cup at a time, mixing a little in between each addition.
  • With mixer on medium speed, add whipping cream, vanilla and salt.
  • Turn the mixer to medium-high speed and beat for an additional 3 to 5 minutes. The frosting will become lighter in color and texture.
  • Before piping onto your cake, spend a couple minutes mixing the buttercream by hand with a wooden spoon to push out the air pockets.
    NOTE: I used a Wilton 1M piping tip
Course: Dessert
Cuisine: Cake
Keyword: Confetti Bundt Cake, Confetti Cake, Funfetti Bundt Cake, Funfetti Cake