Heat the oil in a medium or large skillet over medium heat. Add the onion and the celery and cook until softened, about 2-3 minutes.
Add Goolsby's Sausage to the skillet and cook thoroughly, making sure to break it up into crumbles. Remove from heat.
In a large bowl, stir together stuffing mix and sausage mixture. Add chicken broth in the same amount as water is called for on the stuffing mix instructions.
Stir the mixture together so that the stuffing is soft and moist. Feel free to add a little more broth if needed. Set the mix aside.
Prepare the apples. Slice the very top of the apples off.
Use a spoon or a melon baller to carefully scoop out the entire core of the apple.
Repeat this for every apple.
Spoon stuffing into the apples and place in a high sided baking dish.
Once all of the apples are stuffed and in the dish, carefully pour an additional 1/4-1/2 cup of broth over the apples. Add another 1/4 cup to the bottom of the dish.
Bake uncovered at 350 degrees for about 30 minutes or until the apples are softened, but not falling apart. If you don't want the stuffing to brown, cover the dish while baking.