
Cut the onion, carrots, and celery into chunks and spread them in the slow cooker. Pour in the broth.
Mash the soft butter with the minced garlic, poultry seasoning, salt, and pepper and rub it all over the turkey. Set it on the vegetables.
Cover and cook on LOW for 5-6 hours, until the center reads 165°F.
Move the turkey to a board and rest 10 minutes (broil it for 3-4 minutes first if you want browned skin).
Strain the juices into a saucepan, whisk in the cornstarch mixed with 2 tablespoons cold water, and simmer 2-3 minutes until thick.
Slice the turkey and serve with the gravy and mashed potatoes or a bagged salad.
Photo: DinnerDrop