Heat your oven to 350º F. In a greased 2 quart baking dish, layer half of the potatoes in slightly overlapping, circular pattern. Sprinkle with half of the cheese and scallions. Repeat layering with remaining potatoes, cheese and scallions. Pour in broth and sprinkle with pepper. Cover with foil, and bake for 45 minutes. Uncover and bake for an additional 35 minutes or until golden brown. Makes 8 servings