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+ servings
Funfetti Vanilla Sheet Cake with Strawberry Buttercream
Prep Time
15 mins
 
This delicious vanilla sheet cake is a sublimely moist and flavorful cake that’s packed with funfetti sprinkles and topped with a strawberry flavor cream cheese frosting.
Course: Dessert
Cuisine: American
Keyword: birthday sheet cake recipe, strawberry sheet cake recipe
Servings: 18 Slices
Calories: 510 kcal
Author: Jackie
Ingredients
For the sheet cake
  • 3 cups all-purpose flour
  • 1 ¼ teaspoons baking powder
  • 2 ½ teaspoon baking soda
  • 1 teaspoon salt
  • 2 cups white sugar
  • 3 large eggs
  • ½ cup canola oil
  • 1 cup buttermilk room temperature
  • 2 ½ teaspoons vanilla extract
  • 1 cup boiling water
  • ¾ cup funfetti sprinkles
For the strawberry cream cheese frosting
  • 1 cup unsalted butter softened
  • 1 cup cream cheese softened
  • 2 ½ cups powdered sugar
  • ½ cup strawberry preserve or 1 teaspoon strawberry extract
To decorate
  • ½ cup Funfetti sprinkles
Instructions
  1. Preheat the oven to 350F and line a 9” x 13” baking pan with parchment paper.
  2. In a large mixing bowl, add the flour, baking powder, bicarbonate of soda, salt and sugar. Whisk together to combine.

  3. Add the eggs, canola oil, buttermilk and vanilla extract and whisk until very smooth.
  4. Pour in the boiling water and whisk again until fully combined. Tip in the funfetti sprinkles and use a spatula to gently incorporate. The mixture will be very thin, this is normal!

  5. Transfer the cake mixture to the prepared baking pan. Bake in the center of the preheated oven for 30 minutes or until the cake is golden brown, shrinking away from the sides of the pan slightly and feel springy when touched with your finger.

  6. Leave the cake to cool in the pan before turning out onto a wire rack to frost.
  7. To make the cream cheese frosting, put the soft butter and cream cheese into a mixing bowl and beat on a low speed until smooth and combined.

  8. Add the powdered sugar and strawberry preserve (or strawberry extract if using) and beat until smooth and creamy. At this point, you can add a touch of pink food coloring if you would like the frosting to be a brighter shade of pink.

  9. Use a spoon to dollop the frosting on to the cooled vanilla sheet cake. Spread the frosting with an off set spatula into an even layer across the entire surface of the cake.

  10. Sprinkle with Funfetti, slice and enjoy!
Recipe Notes

• This is a sublimely moist and flavorful vanilla cake packed with funfetti sprinkles and topped with a strawberry flavor cream cheese frosting. The cake is very light and soft thanks to the buttermilk. It takes very little effort to make and can all be mixed in one bowl!
• If you don’t have buttermilk you can substitute with sour cream or plain yogurt. Alternatively, you can make your own buttermilk by adding 1 tablespoon white wine vinegar or lemon juice to 1 cup of milk.
• Use a flavorless oil such as canola oil or vegetable oil.
• The cake mixture for this vanilla sheet cake will be very thin and runny, which is normal for this
type of cake.
• The outside layer of the cake will be golden brown however the inside will look pale in color with
flecks of Funfetti running throughout.
• We used Fancy Sprinkles Funfetti because they are bake stable and don’t run during baking.
• As mentioned in the recipe, you may substitute the strawberry preserve with 1 teaspoon of strawberry
extract. We have found strawberry preserve to give the most authentic and natural strawberry
flavor.
• The strawberry preserve will add a hint of pastel pink to the frosting. Feel free to add pink food
coloring for a more vivid color.
• Cream cheese frosting is a different consistency to pipeable buttercream. Since this is to frost a
sheet cake the frosting is lighter, creamier and not as thick.
• If the frosting is too runny simply add more powdered sugar a tablespoon at a time. If it’s too thick you
can add a splash of milk or heavy cream.
• Storage: Store in an airtight container in the refrigerator for 3 days. The vanilla sheet cake can
be frozen (un-frosted) for up to 1 month.

Nutrition Facts
Funfetti Vanilla Sheet Cake with Strawberry Buttercream
Amount Per Serving (1 slice)
Calories 510 Calories from Fat 207
% Daily Value*
Fat 23g35%
Saturated Fat 11g69%
Trans Fat 0.4g
Polyunsaturated Fat 3g
Monounsaturated Fat 8g
Cholesterol 69mg23%
Sodium 381mg17%
Potassium 79mg2%
Carbohydrates 73g24%
Fiber 1g4%
Sugar 54g60%
Protein 4g8%
Vitamin A 546IU11%
Vitamin C 1mg1%
Calcium 57mg6%
Iron 1mg6%
* Percent Daily Values are based on a 2000 calorie diet.