In a pan over medium heat add the pork tenderloin and the apple juice. As it heats up with will shred easily, using a fork. I let mine heat until the meat re-hydrated itself with the juice. About 10 minutes or so.

Remove from heat, stir in BBQ sauce and set aside.

Butter one side of two slices of sour dough bread. Turn your skillet to high heat, and grill that buttered side. When toasted golden brown, turn that side inward, add a slice of cheese and a layer of BBQ pork.

Butter the outsides of the bread and grill until the cheese is melted and the outside are toasted golden brown.

Cut in half and serve.