re: Flank Steak, oven temp and how long?

You can cook it in the oven, but you need to braise it if you do. Just putting it in dry heat is a bad idea.

Put it in a marinade and braising liquid like beef stock, cover it and pop it in the oven on 325 degrees for about 2 1/2 hours. It comes out great like that. You don't want to completely cover the meat with the liquid. You're not boiling the meat. For a nice twist, put some orange zest in the braising liquid before you cook it.