Easy Marinated Pork Tenderloin

Whisk together the olive oil, soy sauce, garlic, mustard, salt, and pepper in a bowl.

Place the pork loin in a large sealable plastic bag and pour in the marinade. Marinate in the refrigerator at least 1 hour before cooking.

Preheat an oven to 350 degrees F (175 degrees C).

Transfer the pork loin to a baking dish; pour marinade over the pork.

Cook in the preheated oven until the pork is no longer pink in the center, 45 to 60 minutes. An instant-read thermometer inserted into the center should read 145 degrees F (63 degrees C).