For 6 people: 4 T olive oil, 1 medium peeled onion, 1 large can of San Marzano crushed tomatoes, 1/2 cup of fresh basil, salt to taste. Cook oil and whole peeled onion in medium saucepan over medium heat about 2 minutes. Stir in crushed tomatoes. Bring to simmer and cook 5 more minutes. Off heat, add basil and season with salt. Discard the onion. Delicious and very quick!