prepare mushrooms by cutting off stems level with base of mushroom and set aside
take a teaspoon and scoop out the veins inside the underside of the mushrooms
rinse and set aside
cut up all of the ingredients above except for the mushroom caps and place them in the food processor
process the vegetables so they are fine enough for stuffing a mushroom
line a cookie sheet with foil and place the mushrooms on the cookie sheet and spray the insides of the mushrooms lightly with PAM
weigh the chopped vegetables and mushrooms and divide into servings based on your vegetable allowance for the day (should make approximately 4 10-oz servings)
bake for 50 minutes
recipe can be made in advance and frozen after baking