Confetti Sheet Cake
Confetti Sheet Cake
Ingredients
For the Confetti Cake
- 3/4 cup unsalted butter, room temperature
- 1 1/2 cups granulated sugar
- 3 large eggs, room temperature
- 2 1/4 cups all-purpose flour
- 2 1/2 teaspoons baking powder
- 1/2 teaspoon salt
- 3/4 cup milk
- 1 teaspoon vanilla extract
- 1/2 cup rainbow sprinkles
For the Buttercream
- 1 cup unsalted butter, room temperature
- 3 cups powdered sugar, to 4 cups
- 2 tablespoons milk or cream, to 3 tablespoons
- 1 teaspoon vanilla extract
- 1 pinch salt
- as needed sprinkles, for decorating
Instructions
- 1
Preheat your oven to 350°F. Grease a 9x13 inch baking pan thoroughly.
⏱️ 5 min•🌡️ 350
- 2
In the bowl of a stand mixer fitted with the paddle attachment, cream the 3/4 cup unsalted butter (room temperature) until it is light and creamy, about 2-3 minutes.
⏱️ 3 min
- 3
Add the 1 1/2 cups granulated sugar and 1 teaspoon vanilla extract to the butter mixture. Continue to mix on medium speed until the mixture is light and fluffy, scraping down the sides of the bowl as needed.
⏱️ 4 min
- 4
Add the 3 large eggs (room temperature) to the butter mixture one at a time, mixing well after each addition until the batter is smooth and yellow. Ensure each egg is fully incorporated before adding the next.
⏱️ 3 min
- 5
In a separate medium bowl, whisk together the 2 1/4 cups all-purpose flour, 2 1/2 teaspoons baking powder, and 1/2 teaspoon salt until well combined.
⏱️ 2 min
- 6
With the mixer on low speed, alternate adding the dry ingredients (flour mixture) and the 3/4 cup milk to the wet batter, beginning and ending with the dry ingredients. Mix until just combined, being careful not to overmix.
⏱️ 3 min
- 7
Gently fold in the 1/2 cup rainbow sprinkles into the batter using a spatula. Mix just enough to distribute the sprinkles evenly.
⏱️ 2 min
- 8
Pour the batter into the greased 9x13 inch pan. Spread the cake batter as evenly as possible in the pan to create a nice, even layer.
⏱️ 1 min
- 9
Bake for 30-35 minutes, or until a toothpick inserted into the center of the cake comes out clean. The cake should be lightly golden brown.
⏱️ 35 min•🌡️ 350
- 10
Remove the cake from the oven and let it cool completely in the pan on a wire rack. This will take at least 1 hour.
⏱️ 60 min
- 11
To make the buttercream, beat the 1 cup unsalted butter (room temperature) in the bowl of a stand mixer fitted with the paddle attachment until light and fluffy, about 3-4 minutes.
⏱️ 4 min
- 12
Gradually add 3-4 cups powdered sugar, 2-3 tablespoons milk or cream, 1 teaspoon vanilla extract, and a pinch of salt to the butter. Start on low speed to incorporate the sugar, then increase to medium-high speed and beat until the buttercream is smooth, light, and fluffy, about 3-5 minutes.
⏱️ 5 min
- 13
Once the cake is completely cooled, spread the buttercream evenly over the top of the cake using an offset spatula.
⏱️ 3 min
- 14
If desired, transfer some buttercream to a piping bag fitted with a decorative tip and pipe a border around the edges of the cake.
⏱️ 2 min - 15
Add more sprinkles over the frosted cake for decoration.
⏱️ 1 min
- 16
Slice and serve your homemade Confetti Sheet Cake! Celebrate!
⏱️ 1 min
Kitchen Tools
Nutrition Facts (per serving)
Confetti Sheet Cake
For the Confetti Cake
- 3/4 cup unsalted butter, room temperature
- 1 1/2 cups granulated sugar
- 3 large eggs, room temperature
- 2 1/4 cups all-purpose flour
- 2 1/2 teaspoons baking powder
- 1/2 teaspoon salt
- 3/4 cup milk
- 1 teaspoon vanilla extract
- 1/2 cup rainbow sprinkles
For the Buttercream
- 1 cup unsalted butter, room temperature
- 3 cups powdered sugar, to 4 cups
- 2 tablespoons milk or cream, to 3 tablespoons
- 1 teaspoon vanilla extract
- 1 pinch salt
- as needed sprinkles, for decorating
Instructions
- 1
Preheat your oven to 350°F. Grease a 9x13 inch baking pan thoroughly.
⏱️ 5 min•🌡️ 350 - 2
In the bowl of a stand mixer fitted with the paddle attachment, cream the 3/4 cup unsalted butter (room temperature) until it is light and creamy, about 2-3 minutes.
⏱️ 3 min - 3
Add the 1 1/2 cups granulated sugar and 1 teaspoon vanilla extract to the butter mixture. Continue to mix on medium speed until the mixture is light and fluffy, scraping down the sides of the bowl as needed.
⏱️ 4 min - 4
Add the 3 large eggs (room temperature) to the butter mixture one at a time, mixing well after each addition until the batter is smooth and yellow. Ensure each egg is fully incorporated before adding the next.
⏱️ 3 min - 5
In a separate medium bowl, whisk together the 2 1/4 cups all-purpose flour, 2 1/2 teaspoons baking powder, and 1/2 teaspoon salt until well combined.
⏱️ 2 min - 6
With the mixer on low speed, alternate adding the dry ingredients (flour mixture) and the 3/4 cup milk to the wet batter, beginning and ending with the dry ingredients. Mix until just combined, being careful not to overmix.
⏱️ 3 min - 7
Gently fold in the 1/2 cup rainbow sprinkles into the batter using a spatula. Mix just enough to distribute the sprinkles evenly.
⏱️ 2 min - 8
Pour the batter into the greased 9x13 inch pan. Spread the cake batter as evenly as possible in the pan to create a nice, even layer.
⏱️ 1 min - 9
Bake for 30-35 minutes, or until a toothpick inserted into the center of the cake comes out clean. The cake should be lightly golden brown.
⏱️ 35 min•🌡️ 350 - 10
Remove the cake from the oven and let it cool completely in the pan on a wire rack. This will take at least 1 hour.
⏱️ 60 min - 11
To make the buttercream, beat the 1 cup unsalted butter (room temperature) in the bowl of a stand mixer fitted with the paddle attachment until light and fluffy, about 3-4 minutes.
⏱️ 4 min - 12
Gradually add 3-4 cups powdered sugar, 2-3 tablespoons milk or cream, 1 teaspoon vanilla extract, and a pinch of salt to the butter. Start on low speed to incorporate the sugar, then increase to medium-high speed and beat until the buttercream is smooth, light, and fluffy, about 3-5 minutes.
⏱️ 5 min - 13
Once the cake is completely cooled, spread the buttercream evenly over the top of the cake using an offset spatula.
⏱️ 3 min - 14
If desired, transfer some buttercream to a piping bag fitted with a decorative tip and pipe a border around the edges of the cake.
⏱️ 2 min - 15
Add more sprinkles over the frosted cake for decoration.
⏱️ 1 min - 16
Slice and serve your homemade Confetti Sheet Cake! Celebrate!
⏱️ 1 min