I love this recipe! I have made it several times, and it always turns out great. I definitely recommend baking it in the oven as several people have mentioned. The main other changes I have made are using 2 pounds of ground beef because I wanted it meatier, and using flour tortillas instead of lasagna noodles. The tortillas make it lighter and give it more of a mexican feel than the lasagna noodles, and they don't get soggy like the tortilla chips would if you are planning to make several meals out of it. I do crush tortilla chips or Doritos over the top when I serve it.