Peanuts and peanut butter play an important role in the Vegetarian & Vegan Diet. They are sources of heart-healthy monounsaturated fat and protein and can lower your risk of weight gain, since they help keep you feeling full for hours. When used as a snack, they deliver important nutrition that might otherwise be missing from your diet. And they’re delicious and affordable, too. Here are some easy ways to include both foods in your daily meals.