Preheat oven to 350°.
Remove and discard stems from the mushrooms. Remove brown gills from undersides of mushrooms using a spoon; discard gills.
Combine soy crumbles and next 9 ingredients (through garlic) in a medium bowl. Spoon 1/3 cup soy mixture into each mushroom cap. Place caps on a baking sheet coated with cooking spray. Bake at 350° for 30 minutes or until the mushrooms are tender and tops are lightly browned.