This isn't your ordinary green bean casserole.....this is fresh green beans, sautéed mushrooms, onions breaded in panko and, of course, cream. The onions are really easy to make and there's no frying involved! You coat them in panko and flour and bake them in the oven until golden brown. I warn you -- you might have to hide them or they could very well disappear before you have time to garnish the casserole. But then, you can always make more!