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A slice of Moist Vanilla Birthday Cake on a small dessert plate

Moist Vanilla Birthday Cake

A Moist Vanilla Birthday Cake that stays fresh for days, with a tender, velvety crumb thanks to sour cream. Perfect for make-ahead celebrations, this easy recipe is a crowd-pleaser.
Prep Time 45 minutes
Cook Time 32 minutes
Cooling Time 1 hour
Total Time 2 hours 20 minutes
Course Birthday Cake, Dessert
Cuisine American
Servings 12 Slices
Calories 360 kcal

Ingredients
  

  • All-purpose flour: 2 ¾ cups 330g
  • Baking powder: 2 ½ tsp
  • Baking soda: ¼ tsp
  • Salt: ½ tsp
  • Unsalted butter: ⅔ cup 150g, softened
  • Granulated sugar: 1 ⅔ cups 335g
  • Large eggs: 3 room temperature
  • Pure vanilla extract: 1 ½ tbsp
  • Sour cream: ½ cup 120g, room temperature
  • Whole milk: ¾ cup 180ml, room temperature
  • For American Buttercream Frosting:
  • Unsalted butter: 1 cup 225g, softened
  • Powdered sugar: 4 cups 480g
  • Vanilla extract: 1 tsp
  • Milk: 2-3 tbsp

Instructions
 

  • Preheat oven to 350°F (175°C); grease and line two 9-inch pans.
  • Whisk flour, baking powder, baking soda, and salt.
  • Cream butter and sugar until fluffy.
  • Add eggs, vanilla, and sour cream; mix well.
  • Alternate adding dry ingredients and milk, mixing until just combined.
  • Divide batter between pans; bake 28-32 minutes until toothpick is clean.
  • Cool in pans 10 minutes, transfer to rack to cool completely.
  • For frosting: Beat butter, add powdered sugar, vanilla, and milk; mix until smooth.
  • Level cakes, frost, and decorate.

Equipment

  • Two 9-inch round cake pans
  • Parchment paper
  • Mixing bowl
  • Electric mixer or whisk
  • Rubber spatula
  • Cooling rack
  • Cake leveler (optional)
Keyword Moist Vanilla Birthday Cake, make-ahead vanilla cake, easy birthday cake recipe, soft vanilla cake, celebration cake