Four Cheese Lasagna(Low-Fat)  
["4 egg whites", "24 oz. fat-free cottage cheese", "15 oz. fat-free Ricotta cheese", "lasagna noodles", "1 lb. shredded Mexican cheese", "1 lb. part-skim Mozzarella cheese", "1 jar spaghetti sauce", "1 lb. hamburger"]
["Preheat oven to 350\u00b0. Spray 9 x 13-inch pan with nonfat cooking spray. Brown hamburger and pour spaghetti sauce over it. Beat egg whites with cottage and Ricotta cheeses. Layer ingredients in the following order: lasagna noodles, 1/3 of Ricotta and cottage cheese mixture, 1/2 of hamburger, 1/2 pound of Mexican cheese, lasagna noodles, 1/3 of Ricotta and cottage cheese mixture, rest of hamburger, 1/2 pound of Mozzarella, lasagna noodles, rest of Ricotta and cottage cheese mixture, 1/2 pound Mexican cheese and 1/2 pound Mozzarella cheese. Sprinkle with Parmesan cheese. Bake for 50 minutes. Let cool for a few minutes before cutting."]
["egg whites", "cottage cheese", "Ricotta cheese", "lasagna noodles", "cheese", "Mozzarella cheese", "spaghetti sauce", "hamburger"]