Gratin of Pea Beans and Ham Recipe

In a large bowl,soak beans in water to cover,over night. Drain the beans,transfer to a large,heavy sauce pan or casserole, and add the studded onion and enough salted water to cover by 1 inch. Bring to the boil,reduce heat,cover, and simmer the beans about 1 1/2 hours or till tender. Drain the beans and discard the onion. Preheat the oven to 375*F. In a large skillet, heat one half the butter, add the 2 chopped onions and garlic, and saute over moderate heat 5 minutes, stirring. Add the tomatoes,ham,thyme,marjoram,and salt and pepper to taste, and simmer the mixture 10 minutes. Add the stock and cream, return to the simmer,add the beans,and simmer 5 minutes. Transfer the mixture to a large gratin dish, sprinkle the bread crumbs on top,dot with the remaining butter,and bake 30 minutes.