Lima beans contain many essential nutrients, including 21 grams of fiber, 20 grams of protein, 5 percent of the daily recommendation for vitamin C and 35 percent for iron, per 1/2-cup serving. Proper storage and cooking techniques help preserve the nutritional quality of lima beans and prevent spoilage, making them a healthy addition to a well balanced diet. Serve lima beans as a side dish, or toss them into salads, stews, soups and casseroles to increase your vitamin and mineral intake.