Rustic White Bean and Mushroom Casserole

READY IN: 1hr 20mins




  • Drain and rinse beans. Add to stockpot with 4 c cold water. Bring to a boil and simmer for 3 minutes. Skim off any white foam from the top. Cover the pot and lower the heat to medium. Add the onion, celery, carrot, thyme and tarragon. Simmer for about 45 minutes.
  • Remove the carrot, onion and celery (either discard or use in a stock). Lower the heat to low and continue to simmer. The beans should resemble a thick stew, if there's too much liquid, leave the pot uncovered and stir occasionally.
  • About 10 minutes before the beans are done, place the garlic and 2 T oil in a cold skillet. Heat the skillet over medium heat, allowing the garlic to sizzle for about 30 seconds. Add the chopped leeks and saute 1-2 minutes. Scrape the leeks into the beans.
  • Add the remaining 2 T oil, allow to warm, and add the mushrooms. Sprinkle the mushrooms lightly with 1/2 t salt and saute until most of the mushroom liquid has evaporated, anywhere from 8-12 minutes depending on the types of mushrooms. Add the mushrooms to the beans.
  • Turn off the heat and season the beans with the remaining salt and pepper.
  • Preheat oven to 350.
  • Make the sage bread crumbs: Melt the margarine in a large, heavy skillet over medium heat. Stir in the bread crumbs, walnuts, sage, oregano, and paprika, and season with salt and pepper. Stir constantly until the mixture is lightly coated, 3-4 minute Remove from the heat.
  • Pour the beans into a casserole dish. Top with the sage bread crumbs. Bake for 20-25 minutes, until the bread crumbs are golden and the beans are bubbling.