Fresh Banana Layer Cake

Ingredients

• 2 1/4 cups cake flour (sift before measuring)
• 3/4 teaspoon baking soda
• 1/2 teaspoon baking powder
• 1/2 teaspoon salt
• 1 cup mashed banana (about 2 ripe)
• 1/4 cup plain yogurt
• 1 1/2 teaspoons vanilla
• 1/2 cup butter, softened
• 1 cup sugar
• 2 large eggs
• For Frosting
• 1 lb confectioners' sugar
• 8 ounces cream cheese, softened
• 1/2 cup butter, softened
• 2 teaspoons vanilla
• 2 -3 large bananas