Turkey Breast with Gravy by Earth Mama’s World

– 6.5 lb. bone-in, skin-on turkey breast
– Spices: salt, pepper, garlic powder, onion powder, and paprika
– 1 (14 oz) can turkey or chicken broth
– 1 large onion, quartered
– 1 stock celery, cut in large pieces
– 1 sprig of thyme
– 3 cloves of garlic
– 3 tablespoons cornstarch
– 3 tablespoons cold water