Make-Ahead Tips for Thanksgiving:
- Lentils: Cook them up to 3 days ahead and refrigerate in an airtight container. Reheat on the stove with a splash of broth to loosen them.
- Sweet potatoes: Roast them a day ahead, refrigerate, then reheat cut-side up at 350ºF for 15 to 20 minutes, until hot through.
- Day of: Reheat both while the turkey rests, then assemble on the platter just before serving.
- Prep work: The onions, leeks, celery, and carrots can all be chopped a day or two ahead.