Preheat oven to 400
Place 2 pounds of mushrooms on a sheet tray ( I like a mixture of 1 pound white button mushrooms and 1 pound of other mushrooms such as a gourmet mushroom mix)
drizzle with olive oil (about 2 tablespoons)
season with salt pepper
Add other seasonings- about a tablespoon (by that I mean your choice of grated ginger or thyme or basil or sesame seeds, or maybe a spice rub that you like)
Toss together and roast for about 30 minutes...
once cooled store in fridge until needed