Rinse and dry the potatoes. Then using a sharp knife, cut slices ⅛ of an inch thick, ⅔ of the way through the potatoes.
Melt the butter. Use a brush to spread the butter all over the potatoes. Then do the same with the maple syrup. Generously sprinkle about ¼ teaspoon of salt on each potato.
Place the potatoes in an oven heated to 425 degrees and bake for 50 minutes to 1 hour, until tender.