I believe it's a staple of Paleo cooking (though I don't subscribe to that or any particular diet.) Mostly I'm looking to include more whole foods in my diet, so I follow this basic recipe, slicing a sweet potato into about 5 "toasts" and baking them for 15 minutes. Then I let them cool and refrigerate them. When I'm ready for toast, I pop a slice into our toaster oven (a slotted toaster also works.) Once they're crispy and warm, I top them with whatever I'd put on toast or a bagel. For me, this week, it's a little cream cheese with lox and capers. Hits the spot!