You can make the dressing while the potatoes cook or it can be made ahead and stored in an airtight container in refrigerator for up to 2 days. Let the chilled dressing stand 30 minutes before using. If you cannot find fingerling potatoes, you can use 1 1/2 lb. small red potatoes, halved, with a bake time of 35 minutes or 1 1/2 lb. russet potatoes, quartered, with a bake time of 40 minutes. Recipe is from Southern Living.