Celery Root and Yukon Gold Gratin with Swiss Chard and Gorgonzola

If you’ve never combined celery root with potatoes, you’re in for a treat. The celery-like herbal notes from the knobby root elevate this potato dish to a new level, and the Swiss chard adds a welcome touch of green. While tasty, the greens also cut the richness of the dish just enough to ease any guilt you may have for eating something so delicious on a work night.