Parmesan Asparagus Soup

3 cups chicken broth 1 pound asparagus stalks, root end trimmed, salted 1/4 onion, peeled 1/4 cup grated parmesan cheese 1 tbsp white balsamic vinegar salt and pepper

Using cuisinart Blend and Cook Soup Maker, place all ingredients into container in the order listed and secure lid. switch machine to start and slowly increase speed for 30 minutes. Add salt and pepper