Food & Cooking Recipes Quick & Easy Recipes Classic Red Sauce Be the first to rate & review! By Martha Stewart Test Kitchen Martha Stewart Test Kitchen The recipes developed by our test kitchen team have undergone a rigorous process of development and testing, ensuring that every element is optimal, from ingredient amounts to method and cooking time. This process includes triple-testing recipes to ensure they meet our high standards. The many stellar cooks and food editors who have been part of our team include Sarah Carey, Lucinda Scala Quinn, Jennifer Aaronson, Shira Bocar, Anna Kovel, Greg Lofts, Riley Wofford, Lauren Tyrell, and Lindsay Leopold. Editorial Guidelines Updated on October 12, 2017 Print Rate It Share Share Tweet Pin Email Photo: Heami Lee Prep Time: 15 mins Total Time: 35 mins Yield: 5 cups You only need five ingredients (not including salt!) to make our ultimate red sauce. Ingredients 2 tablespoons extra-virgin olive oil 2 cups finely chopped onion Kosher salt 3 cloves garlic, minced ¼ teaspoon red-pepper flakes 2 cans (each 28 ounces) whole peeled tomatoes in juice, pureed in a blender or food processor Directions Heat a straight-sided skillet over medium. Swirl in oil; add onion and 1 teaspoon salt. Cook, stirring occasionally, until onion is soft and translucent, 7 to 9 minutes. Stir in garlic and red-pepper flakes; cook 30 seconds. Add tomatoes to skillet; bring to a boil. Reduce heat and simmer, stirring occasionally, until reduced and thickened slightly, about 20 minutes. Cook's Notes For the purest fresh-from-the-vine flavor, we like Muir Glen Organic whole peeled tomatoes, available at most grocery stores. Rate it Print