Cook potatoes in boiling, salted water until just tender. Cool
Slice the sweet potatoes 1/2-inch thick. Slice whole orange very thinly.
Place layers of sweet potatoes and orange slices in buttered casserole,
sprinkling each layer with sugar.
Heat oil in a large heavy skillet over medium heat. Season the pork chops with salt and pepper and brown on both sides.
Arrange the browned pork chops on the sweet potatoes. Add 1/4 cup of water.
Cover tightly with foil and bake at 350° F. for 1 hour. Baste occasionally with syrup in dish.
From "The Sweet Potato Cookbook!" Vardaman, MS