Vegan Roast - This needs to be cooked fresh so the coating is crisp.
Spinach Artichoke Dip - You can make this the day before, it reheats really well.
Cranberry Sauce - Serve at room temperature.
Macaroni & Cheese - Make this the day of so the sauce stays "saucy." If you need to make it the day before, make sure you add additional vegetable broth or water to the sauce to loosen it up.
Mashed Potatoes - Make the mashed potatoes the day before or early the day of and keep it warm in a crockpot until dinner.
Mushroom Gravy - Make the gravy the 1-2 days before and reheat for dinner.
Farro Salad - You can make this the day before and serve it warm or cold.
Butternut Squash - This dish can be made up to 3 days in advance and then reheated.
Mashed Cauliflower Green Bean Casserole - Prepare this right before dinner so the topping stays crisp.