Remember mushrooms drastically reduce after cooking. I used about a pound and a half of brown mushrooms for this pie. Also carrots or peas would work well instead of asparagus if you prefer. I used a filet for my steak, however any cut would really work quite well. Use kitchen string to tie together a bundle of thyme. I find this much easier than picking all the leaves. As the dish cooks the leaves fall off leaving behind a tied bundle of sticks which is easily removed.
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