Ingredients:

3 Tablespoons Dijon mustard, divided
1/2 teaspoon kosher salt
1/2 teaspoon ground pepper
1 pound, pork tenderloin
   (trim sliver skin & excess fat)

1 Tablespoons oil
​1 Tablespoon of butter
1 large apple, cored, cut into eighths
1 Tablespoon  balsamic vinegar
2 Tablespoons favorite broth
2 Tablespoons maple syrup

Directions:

1.  Preheat the oven to 425
2.  Combine 1 Tablespoon mustard, salt, & pepper.  Rub all over pork tenderloin.
3.  Heat the oil in a car oven proof skillet over medium-high heat.  Add pork and brown an all sides, 
      3-5 minutes.  Transfer pork to the oven and bake for about 15 minutes or until thermometer
      registers 145 degrees.   Transfer to cutting board and let rest for about 5 minutes.
4.   Place skillet over medium  heat,  add butter and then sauté the apple slices until golden and
      remove apples to plate.
​5.  Add vinegar to skillet, scraping up any brown bits,  add broth, syrup, and remaining  mustard, 
     heat until desired thickness.
6.  Slice meat, add any meat juices to to sauce.  Serve pork, topped with sauce & sautéed apple slices.