This tomato sauce from the queen of Italian

This classic Italian tomato sauce is simplicity itself, requiring only a few ingredients and minimal preparation. It’s a staple of Italian cooking that has been delighting home cooks for decades.

Ingredients
– 2 pounds ripe tomatoes, blanched, peeled, cored, and roughly chopped (about 4 1/2 cups), or 1 (28-ounce) can imported Italian plum tomatoes (such as San Marzano) (undrained), chopped
– 1 medium-size (10-ounce) yellow onion, peeled and cut in half lengthwise
– 5 tablespoons unsalted butter (2 1/2 ounces)
– 1 teaspoon kosher salt, plus more to taste

Directions