Boulangère Potatoes

Procedure

1. Sauté the onions in butter or fat until they are translucent and just beginning to brown.
2. Add the potatoes and toss until coated with fat.
3. Place in a baking pan or in a roasting pan under a partially cooked roast. Pour in the hot stock. Season.
4. Bake 1–1½ hours at 350°F (175°C) or at the roasting temperature of lamb, until