How to Cook Pork Tenderloin in the Oven?

Pork tenderloin is an easy dish to prepare in your oven. Preheat your oven to 425 degrees. Place tenderloin in a roasting pan and roast in the oven for 25 to 30 minutes for a .75 to 1 pound tenderloin. The internal temperature should reach 160 to 170 degrees.