Au Gratin Jerusalem Artichokes

7 or 8 Jerusalem artichokes, depending on the size
1/2 Tbsp butter
salt and pepper to taste
1/2 to 3/4 cup freshly grated Parmesan cheese

Preheat oven to 400 degrees.
Scrub the Jerusalem artichokes with a stiff vegetable brush to remove the skins.
Bring a pot of salted water to boil, add the Jerusalem artichokes, lower the heat slightly, and boil gently for about 8 to 10 minutes or until knife tender.  Drain well and cool slightly.
Spread the butter evenly over the bottom of sides of a small baking dish.
Thinly slice the Jerusalem artichokes and lay them in the baking dish.
Season with salt and black pepper, then evenly sprinkle the Parmesan cheese over the top.
Bake in preheated oven until the Parmesan cheese browns nicely and the Jerusalem artichokes are fork tender.
Remove and serve warm.
This is serve 2 to 4 as a side dish.