Peel and cut the onions in 1/8 inch slices. Peel, core, and cut the apples into similar slices. Saute bacon and remove from the pan and mince. Take out two tablespoons of the bacon fat and toss the bread crumbs in the remainder. Grease a baking dish. Arrange the onions, apples, and bacon in alternate layers. Pour over hot stock or water. Cover the top with the bread crumbs. Cover the dish and bake it for 30 minutes at 375 degrees. Uncover and bake it about 15 minutes longer. From Apple Recipes by the Connecticut Apple Marketing Board and the Connecticut Department of Agriculture