cheddar cheese (reserve 1 cup)
Combine tomato sauce and enchilada sauce in medium bowl.
Brown ground beef; drain. Add salt, cheese, and onions.
Dip tortillas in sauce. Add meat and roll. Lay folded side down in square casserole dish.
Pour 1 cup of sauce and 1 cup of cheese over enchiladas. Bake at 350*F for 20 minutes.