simmer in covered pot for approximately 2 hours. In a large pot place beans and water. Add other ingredients and continue simmering for approximately two more hours. Recipe: Great Northern Beans with Tomatoes and Herbs. minced garlic, water, great northern beans, water, no-salt-added diced tomatoes and 5 more Tomatillo-Poblano White Beans from The Ultimate Vegan Cookbook for Your Instant Pot Healthy Slow Cooking tomatillos, dried oregano, great northern beans, jalapeño, poblano and 5 more great northern beans, eggplant, agave nectar, cayenne, vegetable broth and 10 more Tomato White Bean Soup Dietitian Debbie Dishes vegetable broth, whole milk, salt, granulated sugar, garlic, great northern white beans and 6 more Enjoy this quick and easy dish as a vegetarian main course or as a simple side for a grilled entrée. In the future, you can try cooking the soup a little longer—different slow cookers often cook at different temperatures, so yours might need longer than mine does. Wash and soak beans over night. Cannellini beans are also more firm than Great Northern beans, which have a tendency to break down faster than cannellini beans.