Slice your rolls and set them on a baking sheet cut side up. Grate your cheese. Turn your broiler on. Once the mushrooms are done, carefully load them up on both sides of the rolls. Carefully add your shredded cheese and/or liquid mozzarella on top of each mound of mushrooms/jackfruit. Broil until the cheese is melty and toasted up which occurs quickly so keep a watchful eye.
Notes
The jackfruit will easy pull apart and will resemble the texture of pulled pork.