In mixing bowl whisk together the marinade ingredients.
Add pork tenderloins to a large zip-top bag (or bowl & cover with plastic wrap) and pour the marinade mixture into the bag. Let marinate for 4 to 12 hours.
Preheat Bull Pizza Oven or Bull Grill to 350-400°F and place pork loin with the marinade into a heavy-duty casserole dish. Turn off the Bull Pizza Oven and close the door & chimney. Monitor the temps every 30 minutes and turn on the oven as necessary to maintain 350-400°F.
Bake uncovered for about 1 hour. Cook the pork tenderloins to an internal temperature of 140°F.
Remove from the oven/grill and rest for at least 15 minutes before slicing.