Preheat oven to 350°F. Place ... processor, combine black beans, cilantro, lemon juice, salt ... smooth. Transfer sweet potato mixture to large mixing bowl ... 4 to 6 servings.
Sauté onion. Pour soup into ... Add sautéed onion, green beans, mushroom pieces and pepper. Mix well. Sprinkle crushed potato chips on top. Bake at 350°F for 25 minutes.