crusty round bread (I used sourdough) • sirloin steak (not too thick or thin, any steak of your choice will do, 7-8 oz in size, idea is to cover the bread nicely) • lbs mushroom, chopped finely • red pepper • medium sized onion (for caramelized onion) • tsp brown sugar (optional) • cup fresh baby spinach • cheddar slices (your choice of cheese) • Swiss cheese slices (your choice of cheese) • tbsp honey mustard • tbsp mayo • tbsp roasted garlic dip (optional, I had some leftover from a pizza takeout) •