I made this recipe exactly as written with 2 additional ingredients: Crimini Mushrooms and Celery. I also doubled the recipe, as it was made for a neighboring family. Very pleasing aroma! The vegetables were tender, but not mushy and also had great flavor. This is a very filling one pot meal that I highly recommend. It is inexpensive; 12 servings cost me about $14.00. It's easy to put together and the slow roasting really makes this dish a winner. You probably could make this in a crock pot, but you would truly be missing out on the roasting caramelization and the vegetables would certainly turn to mush.