Line a cookie sheet with foil and spray with non stick cooking spray.
Place pork tenderloin on foil and season with salt and pepper on both sides of meat. Set aside.
In a medium sized bowl combine the brown sugar, maple syrup, mustard, and pecans.
Stir until well combined.
Spoon the maple syrup and pecan mixture over the top of the pork tenderloin.
Cook uncovered for about an hour, or until the internal temperature of the pork reaches 145℉. If the glaze starts to get well done, place tented foil loosely over the pork during the cooking time.
After it's done cooking, let the meat rest for about 5-10 minutes. Slice and serve.
Notes
You can also place cut up potatoes and vegetables around the pork and cook them all together. We drizzled olive oil and your choice of seasonings on the veggies and potatoes.