HEAT oven to 350°F. Brown ground beef in large skillet; drain. Stir in canned tomatoes and taco seasoning. Reduce heat; simmer 5 minutes. Remove from heat and stir in 2/3 cup Crispy Fried Onions. Combine cottage cheese, 1 cup Cheddar cheese and the eggs; set aside.
OVER LAP 3 tortillas in bottom of greased 2-quart baking dish. Overlap 6 tortillas around sides of dish. Spoon beef mixture evenly over tortillas; top with remaining 3 tortillas. Spoon cheese mixture over beef and tortillas. Bake, covered, 45 minutes or until cheese mixture is set.
TOP with remaining cheddar cheese and sprinkle remaining onions down center of casserole. Bake 5 minutes until onions are golden. Let stand 5 minutes before serving. Just before serving arrange tomato and lettuce around edges of casserole.