Cut your celery, carrots, onion, and garlic, Add most of them to the bottom of your roasting pan.
*Note: be sure to use a roasting pan with an elevated rack to keep the bird somewhat above the liquid.
Prepare your turkey by removing the added items (neck, giblets, gravy packet) - no need to rinse the turkey - leave the tie on the legs - this helps keep it together.
Place turkey in your prepared pan.
Stuff remaining veggies inside turkey.
Add one apple - cut in half, inside turkey.
Place remaining apples (also cut in half) around outside of the turkey.
Cut your butter into 1 tbsp pats.
Carefully lift skin away from meat and slide pats of butter in between the skin & breast.
Add chicken stock to the bottom of the pan.
Melt your compound butter and brush over the entire turkey.
Roast in preheated oven, uncovered for 30 minutes.
Remove, baste, tent with foil - return to oven.