I love making these because they are so versatile. My daughter asked me to do all different kinds of these one year for her b-day. This is just one example: I have made pizza ones stuffed w/ sauce, mozzerella, parm & sausage; roast beef w/ sauteed mushrooms & swiss & carmelized onions, etc. This one tastes like a sub. The only problem is they are difficult to slice, so sometimes I just get individual large crusty rolls & hollow those out to stuff instead.
Preheat oven to 350 degrees. Cut top off sourdough bread and set aside. Hollow out inside, leaving enough room on the bottom to hold the sandwich together.
Brush inside of bread, including up the sides, with Italian dressing.
Lay ham on bottom, then Muenster (or any kind of cheese)slices, then turkey. Add some of the spices & parmesan. (I use Italian spices and salt & pepper). (If you are using sauteed mushrooms, carmelized or fried onions, or the roasted red peppers, add them now, too. Place top back on bread & wrap entire sandwich in foil.
Bake at 350 degrees for 15/20 minutes. When you remove from oven, top w/ lettuce, tomatoes, cucumber, onion, etc. Slice as best as you can. :) & ENJOY! All of my friends love this.