Heat water to boil. Add bouillon cubes, potatoes and onions. Cook until almost tender. Add frozen vegetables and soup. Bring back to low boil until vegetables are about tender. Add cheese and simmer about 10 minutes to blend flavors. Soup can be cooked ahead of time, up to adding cheese. Reheat, add cheese and simmer. Stir often with wooden spoon during simmering since cheese tends to stick on bottom.