Vanilla Cake with Vanilla Swiss Buttercream Recipe

Ingredients

• Vanilla Cake:
• Nonstick cooking spray, for the pans
• 4 ounces (1 stick) unsalted butter, at room temperature
• 1/2 cup canola oil
• 3 cups sugar
• 4 large eggs
• 2 tablespoons vanilla bean paste
• 3 cups all-purpose flour
• 1 teaspoon baking powder
• 1 teaspoon kosher salt
• 1 cup buttermilk
• Vanilla Swiss Buttercream:
• 5 large egg whites
• 1 cup plus 2 tablespoons sugar
• 1 pound (4 sticks) unsalted butter, cubed, at room temperature
• 1 tablespoon vanilla bean paste
• 1/2 teaspoon kosher salt
• Assembly:
• 1/4 cup fresh blackberries
• 1/4 cup fresh blueberries
• 1/4 cup fresh raspberries
• 1/4 cup fresh strawberries