Cabbage Soup

1 cup chopped onion
2 tablespoons butter
2 cups shredded cabbage
1 (10 ounce) package frozen lima beans, cooked and drained
1 cup sliced carrots
1 cup diced potatoes
1 cup chicken broth
1/2 teaspoon salt
1/4 cup butter
1/4 cup all-purpose flour
1/4 teaspoon paprika
1/4 teaspoon pepper
3 cups milk
2 cups (8 ounces) shredded Cheddar cheese

Saut