Wash mushrooms and remove stems. Place cap up in a large baking dish (with sides). Dice stems finely and saute until cooked.
Slightly soften cream cheese in microwaveable bowl.
Add sauted stems and all other ingredients except parmesan cheese. If mixture is too liquidy, add a bit more bread crumbs but make sure you don't make it stiff.
Mound mushroom caps with filling. Sprinkle with parmesan.
Bake at 400 degrees for 12-18 minutes until mushrooms are browned. Drain juice carefully and serve.