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4.6 from 21 votes

The Best Easy Vanilla Sheet Cake Recipe

Easy delicious red white and blue vanilla funfetti sheet cake - perfect for the fourth of July, cookouts, parties, and more!

Prep Time
25 mins
Cook Time
25 mins
Total Time
1 hr
Servings: 15
Calories: 360 kcal
Course: Cake
Cuisine: American

Ingredients

  • For the cake:
  • 2 cups + 2 tablespoons all-purpose flour
  • ¾ teaspoon baking powder
  • ½ teaspoon fine sea salt
  • ¼ teaspoon baking soda
  • ¾ cup unsalted butter room temp
  • 1 & ½ cups granulated sugar
  • 6 large egg whites room temp
  • ¾ cup whole milk room temp
  • 1 tablespoon vanilla extract
  • ½ cup sour cream room temp
  • ¾ cup patriotic sprinkles
  • FOR THE FROSTING:
  • ¾ cup unsalted butter softened
  • 3 cups powdered sugar
  • Pinch of sea salt
  • 2 tablespoons whole milk
  • 1 teaspoon vanilla extract
  • More sprinkles for garnish optional

Instructions

    Cup of Yum
  1. Preheat the oven to 350°F. Spray a 9x13 baking dish with baking spray, set aside. 
  2. In a medium-sized bowl, mix together the flour, baking powder, salt, and baking soda, set aside.
  3. In the body of a stand mixer with the paddle attachment, cream the butter with the sugar for 3 minutes until light and fluffy, scrape down the sides as needed.
  4. Add the egg whites into the mixer in three batches, mixing them in fully before the next addition, scrape down the sides.
  5. Slowly stir in the milk and vanilla until smooth.
  6. Add half of the flour mixture and mix in until combined.
  7. Mix in half of the sour cream until combined.
  8. Repeat with the remaining flour and sour cream.
  9. Scrape down the sides and stir in the sprinkles.
  10. Pour the batter into the baking dish and smooth out the top.
  11. Bake for 35-42 minutes until a toothpick inserted into the center comes out clean.
  12. Place on a wire rack to cool completely.
  13. While the cake is cooling, make the frosting by placing the butter into a large bowl with an electric hand mixer and whip until smooth.
  14. Slowly add the powdered sugar 1 cup at a time until incorporated.
  15. Add the salt, milk, and vanilla, stir it in until combined then whip it on medium-high speed until light and fluffy for 3 minutes.
  16. Frost the cake and add more sprinkles if desired, cut and serve.

Nutrition Information

Serving 1g Calories 360kcal (18%) Carbohydrates 37g (12%) Protein 2g (4%) Fat 23g (35%) Saturated Fat 13g (65%) Polyunsaturated Fat 9g Cholesterol 55mg (18%) Sodium 158mg (7%) Sugar 34g (68%)

Nutrition Facts

Serving: 15Serving

Amount Per Serving

Calories 360

% Daily Value*

Serving 1g
Calories 360kcal 18%
Carbohydrates 37g 12%
Protein 2g 4%
Fat 23g 35%
Saturated Fat 13g 65%
Polyunsaturated Fat 9g 53%
Cholesterol 55mg 18%
Sodium 158mg 7%
Sugar 34g 68%

* Percent Daily Values are based on a 2,000 calorie diet.