Mushroom, bacon & Swiss cheese burger

Remove rind from bacon. Trim stems of mushrooms. Season with salt and pepper. 

Cook bacon in an oiled, large non-stick frying pan over a medium heat for about 3 minutes on each side, or until browned. Remove. Cover with foil to keep warm.

Add mushrooms to same heated pan, stem-side down. Cook, covered, for 4 minutes on each side, or until tender. Place 2 cheese slices on
each one. Cook, covered, until cheese is melted.

Split rolls in half. Top with spinach, bacon, mushrooms and salsa. Replace roll tops.