Healthy Root-Vegetable Gratin | Experience Life

Ingredients

• 2 1/2 lb. sweet potatoes, peeled
• 1 large celery root (2 lb.), peeled with a sharp knife and halved lengthwise
• 1 medium rutabaga (2 lb.), peeled and halved lengthwise
• 1/2 tbs. unsalted butter, melted, plus more for the pan
• Kosher salt
• Freshly ground black pepper
• 1 cup chicken or vegetable broth
• 1/4 cup heavy cream
• 1 1/2 cup walnuts
• 1 tsp. roughly chopped fresh thyme leaves