Cashew butter happens to be packed with good nutrients, like protein, calcium, iron, vitamin E, riboflavin, and healthy fats that your body loves such as oleic acid. While it has ever-so-slightly less protein than peanut butter, itâ??s also far less likely to contain all of the additives and preservatives that peanut butter often does. Additionally, itâ??s high in things like selenium which is a powerful antioxidant that helps prevent cellular damage from free radicals. Hello, anti-aging, illness, and disease fighting properties! Cashews are also known to help prevent painful gallstones.