What do I do to prevent drying into the sheet in the oven?
Roll it out on aluminium foil, then you can peel it off.
Actually, London broil is tricky because you never know how tough it's going to beIn your place I'd slice it into thin pieces, marinate it in either a store bought or homemade marinade (Quick teriyaki - equal parts soy sauce, brown sugar, and sake, sherry, or white wineSome ginger if you have it.) Let it sit for an hour and then cook it in a frying panServe with rice.
