Go Back
+ servings
Soft vanilla sheet cake squares with smooth buttercream frosting stacked on a plate, showing a moist and fluffy crumb texture.

Vanilla Sheet Cake

5 from 1 vote
This tender vanilla sheet cake is light, buttery, and finished with a billowy layer of whipped frosting that feels like a celebration in every bite.
Prep Time 20 minutes
Cook Time 30 minutes
Cooling Time 3 hours
Total Time 3 hours 50 minutes
Servings: 12 slices
Course: Dessert, Snack
Cuisine: American, Western
Calories: 420

Ingredients
  

  • 3 cups cake flour spooned and leveled for accurate measuring
  • 1 ½ cups granulated sugar for sweetness and structure
  • 1 teaspoon baking powder for lift
  • ½ teaspoon baking soda to help the cake rise
  • ½ teaspoon salt to balance the sweetness
  • 1 cup unsalted butter cut into cubes and softened to room temperature
  • 1 tablespoon vanilla extract for classic vanilla flavor
  • 1 cup whole milk at room temperature and divided
  • cup sour cream at room temperature for tenderness
  • 3 large eggs at room temperature for smooth batter
  • 1 cup unsalted butter softened to room temperature for the frosting
  • 4 ½ cups powdered sugar sifted if lumpy for smooth frosting
  • cup heavy cream for a light and fluffy texture
  • 2 teaspoons vanilla extract to flavor the frosting
  • teaspoon salt to balance the sweetness of the frosting
  • 2 tablespoons sprinkles optional for decorating

Method
 

  1. Set the oven to 350°F (177°C) and generously grease a 9x13-inch pan.
  2. Combine the flour, sugar, baking powder, baking soda, and salt in a mixing bowl and blend briefly to distribute everything evenly.
  3. Add the butter, vanilla, and half of the milk, then beat until the mixture turns into a thick, smooth paste.
  4. In a separate bowl, whisk together the remaining milk, sour cream, and eggs until smooth.
  5. With the mixer running, pour in the egg mixture in three additions, mixing briefly after each and stopping to scrape the bowl once, until a smooth batter forms.
  6. Spread the batter evenly into the prepared pan, smoothing the top.
  7. Bake until the center is set and a toothpick comes out clean, about 32–35 minutes.
  8. Let the cake cool completely in the pan on a rack before adding any frosting.
  9. Beat the butter for the frosting until creamy and pale in color.
  10. Add the powdered sugar, cream, and vanilla, then mix slowly at first before whipping on high speed until very light and fluffy.
  11. Adjust the texture with a little more sugar or cream if needed, and add the salt to balance the sweetness.
  12. Spread the frosting generously over the cooled cake, decorate if desired, then slice and serve.

Nutrition

Serving: 120gCalories: 420kcalCarbohydrates: 55gProtein: 5gFat: 20gSaturated Fat: 12gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gCholesterol: 95mgSodium: 220mgPotassium: 110mgFiber: 1gSugar: 38gVitamin A: 650IUCalcium: 90mgIron: 1.5mg

Notes

This is the kind of cake that shows up at birthdays, potlucks, and quiet afternoons when you just need something sweet and familiar. The crumb stays soft for days, and the fluffy frosting makes every slice feel extra special.

Tried this recipe?

Let us know how it was!