This one I made up myself, it's quite very simple
1 quart of stewed tomatoes
1 medium onion
2 cloves Garlic
1 t Salt
1 T Italian seasoning
1/8 t Red pepper
Sauté chopped onion and minced garlic in 1 T butter, when browned put tomatoes, garlic & onion in the blender and blend until smooth.
In a sauce pan, bring sauce to a boil and then bring to a simmer. Add seasonings
Simmer for about an hour or until desired thickness. If you are in a hurry just add tomato paste and add a bit more seasonings.
I use leftovers as a base fir spaghetti!