Silverbeet Casserole Author: Alan Simmons Ingredients 125g fresh mushrooms, sliced 2-3 spring onions, chopped 1-2 tablespoons butter 3 cups cooked silverbeet salt, pepper and nutmeg to taste 2 cups cheese sauce (see i) 3 cups meat sauce (see ii) 1/2 cup breadcrumbs freshly grated parmesan cheese i Cheese Sauce 1 1/2 tablespoons butter 1 1/2