Balsamic-Glazed Pork Sandwiches

Preheat grill to 450 degrees. In a small bowl, mix oregano, coriander, salt, pepper, onion powder, and garlic powder. Rub mixture evenly over pork tenderloins. Place pork on grill.

In a small saucepan, bring balsamic vinegar and brown sugar to a boil over high heat; cook, stirring occasionally until mixture is reduced to 1/2 cup about 3 minutes. Remove from heat.

Grill pork 5 minutes; brush with 1/3 of balsamic mixture, coating entirely. Grill another 5 minutes; brush with remaining balsamic mixture. Continue roasting until internal temperature registers at 155 degrees on an instant-read thermometer. Remove from grill. Let rest for 10 minutes. Slice pork into 1/4 inch thick slices.

Spread mustard over split rolls, then layer half with pork and onions. Top with remaining bread halves. Add any other topping you desire.