This time of year, I'm always looking for creative ways to cook with apples. I found this recipe on www.delish.com. Be sure to check out the site. There are lots of great recipes there.
1/4 cups balsamic vinegar
2 Tbsp maple syrup
3 medium red apples (halved and cored, each cut into 8 wedges)
1 large red onion (halved and sliced into 1/2" thick pieces) - I prefer white onion
1 Tbsp olive oil
Coarse salt and ground pepper to taste
2 (12 oz each) pork tenderloins (trimmed of excess fat)
Place on oven rack in top third of oven, and another rack in bottom third. Preheat oven to 450 degrees. Make glaze: In a small saucepan, bring vinegar and maple syrup to a boil over high heat; cook, stirring occasionally, until mixture has reduced to 1/4 cup, 3 - 4 minutes. Remove from heat; transfer 1 Tbsp to a small bowl for drizzling, and set aside. Reserve the rest of the glaze in saucepan.
On a large rimmed baking sheet, toss apples and onion with oil. Season with salt and pepper; arrange in a single layer, and roast until golden, about 15 minutes. Remove from oven and toss.
Meanwhile, line another rimmed baking sheet with aluminum foil; place pork on foil. Season generously with salt and pepper; brush with glaze from saucepan. Return apples and onion to oven, on bottom rack. Place pork on top rack; roast 10 minutes. Remove pork from oven; brush with glaze (discard any remaining in pan). Roast until pork registers 150 degrees on an instant-read thermometer, and apples and onion are tender, about 10 minutes more.
Transfer pork to a cutting board, and let rest 10 minutes. Slice 1/4" thick; drizzle with reserved tablespoon glaze. Serve with apples and onion.
Suggested side dish: Buttermilk Mashed Potatoes