Special equipment: Toothpicks
Slice into the pork chops horizontally, but not all the way through. (You're essentially butterflying the pork chops and giving them a little pouch.) Set aside.
In a large skillet over medium-high heat, heat up 1 tablespoon olive oil. Add the garlic and onion and saute until fragrant and softened, about 3 minutes. Add the apple, carrots and celery and cook until softened, 7 to 10 minutes.
Add in the cornbread, chicken broth and sage leaves, and stir to incorporate. Season with salt and pepper to taste. Remove the skillet from the heat and let the filling cool for 10 minutes.
Carefully spoon the filling into the pork chops. If they become full and you can no longer stuff anymore, that's ok-save the filling to eat on the side. Use toothpicks to secure the chops shut. If the toothpicks poke out, use scissors to trim them flush to the pork chops.
In the same skillet you used earlier, heat up the remaining tablespoon olive oil. Sear the pork chops, 3 to 5 minutes per side. Turn the heat down to medium and continue cooking, flipping occasionally, until the pork chops have cooked through completely, 15 to 20 minutes. Serve warm with the additional cornbread stuffing!