In a small bowl, mix together the brown sugar, paprika, salt, ground mustard, black pepper, onion powder, and garlic powder.
Pat the pork tenderloins dry, then rub the seasoning mixture evenly over all sides.
Heat olive oil in an oven-safe skillet (like cast iron) over medium-high heat. Sear the pork on all sides for 2–3 minutes per side.
Insert a meat thermometer into the thickest part of one tenderloin. Transfer the skillet to the oven and bake for 10–15 minutes, or until the internal temperature reaches 140°F.
Remove from the oven and loosely wrap the pork in foil. Let it rest for 10–15 minutes (it will continue cooking to 145°F).
Slice and serve.
Notes
Find in MyFitnessPal or the MacrosFirst app by searching for, “Stay Fit Mom Oven Roasted Pork Tenderloin.”