For the Sponge Cake

• 4 large eggs, at room temperature
• ¾ cup granulated sugar
• 1 teaspoon vanilla extract
• ¾ cup all-purpose flour
• 1 teaspoon baking powder
• ¼ teaspoon salt
• Powdered sugar, for dusting the towel

For the Cherry Filling

• 1½ cups cherries (fresh, pitted, or canned, drained)
• ¼ cup granulated sugar
• 1 tablespoon lemon juice
• 1 teaspoon cornstarch mixed with 1 tablespoon water

For the Cream Filling

• 1 cup heavy whipping cream, very cold
• 2 tablespoons powdered sugar
• 1 teaspoon vanilla extract

Optional Garnish

• Powdered sugar for dusting
• Fresh cherries
• Chocolate shavings or curls