Cost information for the following is not included. Normally this is because the quantity or ingredient is unknown
4 lrg portobello mushrooms stems, and
  gills removed
3/4 c. shredded part-skim mozzarella cheese
  (or possibly substitute soy cheese)
  (if using soy cheese, omit and increase soy cheese to 1 c.)
  (or possibly 1 tspn dry thyme)
  (or possibly 1 tspn dry rosemary