3 potato gratin with and prosciutto Recipes

potatoes, sliced thin, artichoke hearts, sliced thin, prosciutto, diced, romano cheese, grated, asiago cheese, grated, olive oil, black pepper, ground

onions, yellow (about 6 very large), vegetable oil (see note below, in directions ), salt, wax potatoes, unpeeled (about 7), milk, heavy cream, garlic cloves, bay leaves, butter, prosciutto, thinly sliced (or 6 slices bacon, cooked and crumbled), gruyere or 6 oz emmenthaler cheese, grated, white pepper (optional)