Cook macaroni in boiling water until done, about 6 minutes, drain. While pasta is cooking, brown ground beef in a large skillet, drain. Add beef back to the skillet and add in tomato sauce, onion, basil, thyme, oregano, and salt. Simmer for 10 minutes on medium-low heat. Taste sauce and add additional salt if needed. Add cooked macaroni to tomato sauce mixture, turning to coat well. Spread half of macaroni mixture in the bottom of a 4 quart baking dish. Sprinkle 1 cup cheddar over, then repeat layers with remaining macaroni and cheddar. Bake in 350 oven for 20 minutes or until cheese is melted and casserole is heated through.