Crostini is a general term that refers to "little toasts" which are usually topped with one or more garnish items. This Southwestern version combines the creaminess of black beans with the heat from guacamole for terrific hors d'oeuvre or snack idea.
Any of the garlic parsley butter not used for the crostini recipe can be used as a sauce for pasta or steamed vegetables. The butter may be placed into a ramekin, or shaped into a log and rolled in plastic wrap. The butter can be held for up to 1 week in the refrigerator, or frozen for several weeks.