Brown ground beef; drain. Add water, sauce and salt. Bring to a boil. In a 7"x11" pan, layer hot sauce, UNCOOKED lasagna, cheese. Repeat layers, ending with sauce. Cover tightly with foil and bake at 375° for 1 hour. Let stand 10 minutes before cutting. MICROWAVE: Cover tightly with plastic wrap and cook on HIGH for 8 minutes, then 30 minutes at MEDIUM-LOW (50%), turning occasionally. Let stand 5 to 10 minutes before cutting.