Delicious and nutritious, cashews have one of the highest amounts in iron and copper among the other tree nuts. Peanut-free and packed with nutrients, this is your plant-based protein powerhouse. Cashew butter contains a high amount of copper and essential amino acids, Even more, this butter made from unsalted cashews contains no sodium and no cholesterol. Cashew nut butter is loaded with phosphorus, copper, iron, and magnesium. Also, If you’ve been searching for a nut butter that doesn’t have the bad rap for the toll it takes on the environment, cashew butter is it.