Cashew butter is similar to peanut butter, comes pretty much the same way and is sold in most supermarkets. You can either find it with the peanut butter or with the specialty foods. It is great on its own and is irresistible to snack on right out of the jar. When you first open it, stir to mix the oils back in and keep refrigerated once open.
Find it online: https://www.afamilyfeast.com/cashew-cranberry-crunch-muffins/