I made marinated flank steak! Yum! We're actually having it tomorrow, but I assembled it today.
1/2 cup soy sauce
1/2 cup green onion, chopped
1/4 cup lime juice
1/4 cup brown sugar
1 tsp garlic, minced
1 can beer
Mix first five ingredients, then stir in beer. Pour over flank steak (mine was about 2 lbs, I think?). Marinate overnight. Can be frozen in marinade and then thawed for later enjoyment.
Grill or broil until medium (can't give you a time since I don't know how thick your steak is).
Slice on an angle against the grain.
Leftovers are great wrapped up in a tortilla!