Saute leftover steak in 2 tbsp of veg oil and 2 tbsp Worcestershire Sauce, until heated through.
Saute bell peppers and onions in 2 tbsp veg oil until tender, sprinkle with salt and pepper to taste.
Saute mushrooms in a dry nonstick skillet until tender, you are looking for a darker, crustier color for intense mushroom flavor.
Combine, meat, peppers, onions and mushrooms together, toss to mix.
Place mayo, chipotle pepper, lime juice in food processor and grind to mix. Season with salt and pepper.
Split rolls lengthwise, put cheese on rolls and put under broiler to melt cheese.
Remove rolls from broiler, spread chipotle mayo on bun and then using tongs, place a few large scoops of meat and peppers into roll. Enjoy!