Crockpot Spaghetti Sauce

1 lb. ground beef
Chopped onion, to taste
2 (1 lb.) cans tomatoes, cut up
1 (8 oz.) can tomato sauce
1 (12 oz.) can tomato paste
1 c. beef broth (bouillon)
2 tbsp. parsley
1 tbsp. brown sugar
1 tsp. dried oregano leaves
1 tsp. dried basil leaves
1 tsp. salt
1/4 tsp. pepper

Brown meat and onion in fry pan, drain off fat; transfer to crock pot.
Add remaining ingredients.
Cover and cook on low for 6-8 hours.
Serve over hot spaghetti.