Heat 2 tablespoons oil in a large oven-proof skillet over medium-high heat.
Add pork tenderloin and sear on all sides until golden brown. Brush entire tenderloin with Maine Maple Glaze, place oranges slices over pork.
Place pork in oven and roast for 15-30 minutes until the center of the tenderloin registers 160 degree F. Brush with additional glaze two more times during roasting time. Let stand 5 minutes, slice and serve.