1. Cook parsnips in boiling, salted water to cover in a large saucepan 30 minutes or until tender. Drain.
2. Process half each of parsnips, butter, broth, and half-and-half in a food processor until smooth, stopping to scrape down sides as needed. Spoon mixture into a large bowl. Repeat procedure with remaining parsnips, butter, broth, and half-and-half; stir in salt and pepper.