Fried Ravioli with Quick Tomato Sauce

Sauce
2 tablespoons olive oil
1 small onion, chopped
2 cloves garlic, finely chopped
2 (14 1/2 ounce) cans Italian-style tomatoes, with liquid
3 tablespoons coarsely chopped fresh basil
    or 1 tablespoon dried basil
Salt and coarsely-ground pepper, to taste

Ravioli
9 ounces frozen or refrigerated ravioli of your choice
2 tablespoons olive oil

Begin with the sauce. Heat the olive oil in a skillet over moderate heat and saut