Have leftover pork roast and need a tip on how to use it up? Make a delicious grilled pork tenderloin sandwich with mozzarella and caramelized onions!
Cover bread with thin slices of leftover cooked pork tenderloin. Lightly season pork with salt and pepper. Divide and spread caramelized onions on top of pork. Spread a thin layer of sliced mozzarella (or grated) on top of onions. Butter one side of remaining pieces of sourdough bread, and place on top of the sandwich, butter side UP.
Cook on medium-low until bottom side has lightly browned.Carefully turn sandwich over. Continue cooking slowly until cheese has melted and sandwich is heated through (low and slow!). When sandwiches are done cooking, remove from skillet. Slice sandwich in half... and enjoy!
Grilled Pork Tenderloin Sandwich w/ Mozzarella & Caramelized Onions https://www.thegratefulgirlcooks.com/pork-tenderloin-sandwich/