7 up cake recipe

-Up Cake Recipe Ingredients: 1 cup (2 sticks) unsalted butter, softened 2 cups granulated sugar 4 large eggs 3 cups all-purpose flour 2 teaspoons vanilla extract 3/4 cup 7-Up (or any lemon-lime soda) 1 teaspoon lemon zest (optional) Powdered sugar for dusting (optional)