Sweet Pea-Pesto Soup

1 small onion, diced
1 medium carrot, thinly sliced
1 medium celery rib, thinly sliced
1 3/4 cups vegetable broth
1 cup water
1/2 tsp. salt
1/4 tsp. pepper
1 pound frozen peas
1/4 cup pesto

•In a medium saucepan, simmer the onion, carrot, and celery in the broth and water with the salt and pepper, covered, until tender, about 6 minutes.
•Add the peas and simmer, uncovered, until bright green and tender, about 3 minutes. Stir in the pesto, then purée in a blender or food processor.
•Season with additional salt and pepper, if desired.

Makes 4 servings