The mushrooms can either be slow baked in the oven or they can be dehydrated.
To bake, first lightly spray a non-stick sheet pan. Lay each slice of marinated mushroom on the tray, not overlapping them. Bake at 275°F (135°C) for up to 1 hour or until crisp.
Alternatively, you can dehydrate them by laying each marinated mushroom on the dehydrator screen and dry until crisp, about 6 to 8 hours at 115°F (46°C).
The mushrooms can also be sliced raw and then sautéed like lardon to add wonderful depth and flavor to many soups, sauces and vegetable stews, such as this
Beefless Bourguignon.