Last-Minute Lasagna
Hands-On Time: 15 minutes Total Time: 50 minutes 1 24- to 26-ounce jar pasta sauce 2 16- to 18 ounce bags frozen large cheese ravioli, unthawed 1 10-ouce box frozen chopped spinach, thawed and squeezed to remove excess water 1 8-ounce bag shredded mozzarella ½ c grated Parmesan 1 lb cooked ground beef, optional to add …