Microwave Easy Onion Soup
["2 large onions", "2 Tbsp. butter", "3 (10 1/2 oz.) cans condensed beef broth", "4 oz. Cheddar cheese", "3 Tbsp. grated Parmesan cheese", "1 Tbsp. minced parsley", "4 (1-inch) slices Italian bread, toasted"]
["Cut each onion in half from stem to root end, then slice thinly crosswise.", "In 3-quart casserole, cook onions and butter on High 15 minutes, stirring twice.", "Add undiluted beef broth and 1 cup of water.", "Cook, covered, on High 10 minutes, stirring once."]
["onions", "butter", "condensed beef broth", "Cheddar cheese", "Parmesan cheese", "parsley", "Italian bread"]