Asparagus Soup

INGREDIENTS
1 (15 ounce) can asparagus
1 (14.5 ounce) can vegetable broth
1/2 cup fat free milk (optional)
1 tablespoon fat free margarine (optional)
salt and pepper to taste

DIRECTIONS
1. Blend the asparagus, with liquid, in a blender or food processor until completely smooth.

2. Heat asparagus and broth together in a medium saucepan over medium heat. Stir in milk, if using, and bring to a low simmer. Stir in butter to finish, if using, and season to taste with salt and pepper.