A single sun-dried tomato can change the entire flavor of a meal. A tomato that is dehydrated in the sun develops an intense flavor and chewy texture without losing the nutrients, including vitamins A and C and the antioxidant lycopene, that make tomatoes a valuable part of your diet. Sun-dried tomatoes will last far longer than their fresh counterparts, and freezing extends their usability, but improper storage will shorten their shelf life.