Line 15x10 pan with tin foil. Sprinkle 1 envelope onion soup on bottom of pan. Put in steaks frozen or thawed. Sprinkle with another envelope over top. Completely seal with foil. Bake 3 hours @350°.
This recipe came from a cookbook my sister has. It has no weight or amount of steak. I used 1 BIG steak and only 1 onion soup envelope, and even then I felt it was a bit salty. The steak I used was partially thawed, next time I'm going to try it frozen. A great way to use steak when you don't want to grill.