This makes a great side dish or even a hearty main course with wilted winter greens.
Preheat oven to 350°. Over medium heat, cook bacon in a saute pan until lightly crisp. Remove bacon with a slotted spoon, reserving grease. Butter the bottom and sides of a 9x13-inch glass baking dish. Place one layer of sliced potatoes over the bottom of the dish. Scatter a handful of sliced onions. Sprinkle with ½ teaspoon salt and pepper to taste. Drizzle 1 teaspoon bacon grease over the onions, then scatter a handful of chopped bacon over this. Sprinkle 1 tablespoon flour over layer. Add another layer of potatoes and onions, repeating with the seasoning, bacon grease, bacon, and flour. Add one final layer of potatoes; sprinkle with the remaining salt and pepper. Pour cream and stock over potatoes. It should barely cover the top layer. Bake at least 1 hour, or until potatoes are tender.