BAKING A SPONGE CAKE ( IN 5 SIMPLE STEPS ) GATHER ALL THE INGREDIENTS. 1 Cup softened butter 2 cups flour 2 teaspoons vanilla extract or 1 vanilla bean 3 eggs 1 cup sugar 1/2 teaspoon baking powder STEP -1 Preheat the oven to 180°C and grease the pan in which the…