In a large bowl, whisk eggs thoroughly to incorporate plenty of air. Whisk in the sugar.
05Stir in sour cream, dry ingredients, vanilla extract and bananas, just until dry ingredients are moistened. Pour into prepared pan and bake approximately 40 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.
06Cool completely and served topped with a dollop of Sweetened Sour Cream Topping.
07To make the topping, in a medium bowl, stir together all topping ingredients. Let stand 10 minutes, then stir again just before serving.