Sauté your peppers. onions, and mushrooms in avocado oil until Set aside
-Thinly slice your steak, toss in the seasonings, and cook to desired doneness on preheated pan. This only took about 1-2 minutes per side since they're so thin
-Meanwhile, have your oven preheated. Melt butter and brush the inside of your rolls. Place in oven for just 1-2 minutes
-For the cheese you can place 5-6 slices in the pan and stir around until the vegetables and steak are all mixed together in the melted cheese