In a skillet sauté sliced peppers and onions on medium/ low heat until peppers are soften and onions are slightly caramelized. Season with salt and pepper. Remove from pan and set aside. Turn up heat on Skillet and sauté shaved steak until cooked through. Season with salt & Pepper and a few dashes of Worcestershire sauce. Mix in Peppers and onions .
Slice Rolls and fill with Steak, Peppers and Onions.
In a small saucepan melt butter and cheese slices slowly. Add cream to create cheese sauce, whisk through and pour over sammies.
Notes
Substitute: No reason you couldn't swap in shaved chicken breast for shaved steak.