Grandma's Spaghetti Sauce

Cook and stir ground beef and onion in a large pot until beef is no longer pink about 10 minutes. Drain excess grease.

Pour tomato sauce and tomato paste into the pot; season with pepper. Stir in tomato puree and ketchup. Add brown sugar mustard celery salt onion salt and garlic salt stirring after each addition.

Simmer sauce over medium-low heat stirring frequently until flavors combine 30 to 45 minutes. Sprinkle in Parmesan cheese during the last 5 minutes of cooking.