This pasta sauce is so easy and so good. It's much less expensive than jarred sauce, only has two ingredients, and is very simple to make. You'll never buy the jarred stuff again!
Heat olive oil in large pot and saute onions until slightly browned.
While onions are cooking, puree tomatoes in food processor.
Add pureed tomatoes into the pot with the onions in large pot. Bring to a low boil, then reduce heat and simmer for one to four hours.
This is a great base sauce. Add in your favorite herbs/seasonings/extras like basil, oregano, garlic, parmesan cheese, sausage, ground turkey or whatever!