Preheat the oven to 425 degrees.
Cut your celery, carrots, onion & garlic & add most of them to the bottom of the roasting pan. *Note- be sure to use a roasting pan with an elevated rack to keep the bird somewhat above the liquid.
Prepare the turkey by removing the added items (neck, giblets, gravy packet) - leave the tie on the legs - this helps keep it together. (no need to rinse the turkey as this just spreads any bacteria to other parts of your kitchen. Anything that you would "rinse-off" will cook out.)
Place the turkey in the prepared pan and stuff the remaining veggies inside of the turkey.
Add one apple- cut in half, inside of the turkey with the vegetables.
Place the remaining apples (also cut in half) around the outside of the turkey.
Cut the butter into 1 tbsp pats. Carefully lift the skin away from the meat & slide the pats of butter in-between the skin & breast.
Pour the chicken stock into the bottom of the pan.
Melt the compound butter & brush over the entire turkey.
Roast in a pre-heated oven uncovered for 30 minutes.
Remove, baste, tent with foil - return to the oven.