Two-Tier Vanilla Cake (Printable)

Moist vanilla sponge layered with buttercream, topped with playful balloon decorations for festive gatherings.

# What Goes In:

→ Vanilla Sponge Cakes

01 - 4.5 cups all-purpose flour
02 - 3.5 teaspoons baking powder
03 - 0.5 teaspoon salt
04 - 2.5 cups granulated sugar
05 - 1.5 cups unsalted butter, room temperature
06 - 8 large eggs, room temperature
07 - 2 tablespoons pure vanilla extract
08 - 2 cups whole milk, room temperature

→ Buttercream Frosting

09 - 2 cups unsalted butter, room temperature
10 - 8 cups powdered sugar, sifted
11 - 0.5 cup whole milk or heavy cream
12 - 2 tablespoons vanilla extract
13 - Pinch of salt
14 - Gel food coloring, optional

→ Decoration

15 - Balloon cake toppers, store-bought or homemade
16 - Edible confetti or sprinkles, optional

# How to Make It:

01 - Preheat oven to 350°F. Grease and line two 8-inch round cake pans and two 6-inch round cake pans with parchment paper.
02 - In a medium bowl, whisk together flour, baking powder, and salt until evenly distributed.
03 - In a large bowl, beat butter and sugar together on medium speed until light and fluffy, approximately 3 to 5 minutes.
04 - Add eggs one at a time to the butter mixture, beating well after each addition. Mix in vanilla extract until fully incorporated.
05 - With mixer on low speed, alternate adding flour mixture and milk in three additions, beginning and ending with flour. Mix until just combined to avoid overmixing.
06 - Divide batter evenly among the prepared pans. Tap pans gently on the counter to release air bubbles.
07 - Bake 8-inch cakes for 35 to 40 minutes and 6-inch cakes for 25 to 30 minutes, or until a toothpick inserted in the center comes out clean.
08 - Allow cakes to cool in pans for 10 minutes, then transfer to wire racks and cool completely.
09 - Beat room temperature butter until creamy. Gradually add powdered sugar, beating well. Mix in vanilla extract, salt, and milk or cream one tablespoon at a time until smooth and spreadable. Tint with food coloring if desired.
10 - Level cake tops if needed. Place one 8-inch layer on a cake board, spread a layer of buttercream, and top with the second 8-inch cake. Repeat process with 6-inch cake layers.
11 - Apply a thin crumb coat of buttercream to each stacked cake. Refrigerate for 20 minutes.
12 - Frost both cake tiers smoothly with remaining buttercream using an offset spatula.
13 - Stack the 6-inch cake tier centered on top of the 8-inch tier, using dowels or straws for structural support if needed.
14 - Decorate assembled cake with balloon toppers and edible confetti or sprinkles as desired.

# Expert Tips:

01 -
  • The vanilla sponge stays impossibly moist because of the milk in the batter, making every bite feel like an accomplishment in itself.
  • Two tiers mean you can actually feed a proper crowd without the cake feeling like an afterthought.
  • Balloon toppers turn an ordinary dessert into instant celebration, and honestly, they're what people remember taking photos of.
  • The buttercream is forgiving enough for beginners but looks professional enough that no one needs to know it's your first try.
02 -
  • Room temperature ingredients are not a suggestion—cold eggs and butter will not emulsify properly, and you'll end up with a grainy, separated batter that bakes into a dense cake.
  • Do not skip the crumb coat step; it's the difference between a professional-looking finished cake and one where loose crumbs get mixed into your final frosting layer and make everything look rough.
  • If your cake tiers start to slide apart while stacking, the dowels might not be tall enough or positioned correctly—measure from the top of the bottom cake to the bottom of the top cake and cut your support dowels to that exact height.
03 -
  • Always use a cake board as your base when you're planning to stack tiers—it gives you a stable foundation for frosting and makes moving the entire structure possible without disaster.
  • The difference between good and great frosting is patience while beating the butter initially and taking your time adding the powdered sugar slowly; rushing this step creates a dense, grainy texture instead of silky smoothness.
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