All Purpose Tomato Sauce
Ingredients 2 tablespoons extra-virgin olive oil 1 cup minced sweet onion, such as Vidalia Kosher salt 1 tablespoon minced garlic (from 2 to 3 cloves) 1/4 teaspoon red pepper flakes 2 cans (each 28 ounces) whole peeled tomatoes in juice, puréed 2 tablespoons unsalted butter Preparation Heat oil in a pot over medium-high. When it shimmers, add onion; season with 1 tablespoon salt. Cook, stirring occasionally, until soft and golden in places, 8 to 10 minutes (if onion colors too quickly, reduce heat to medium)....