Gluten-Free Grilled Flank Steak

Directions

1. In a shallow dish, combine soy sauce and thyme. Add the beef and turn to coat. Cover: refrigerate for at least 8 hours or overnight.
2. Drain and discard marinade. Grill steak, covered, over medium heat or broil 4 in. from the heat for 6-8 minutes on each side or until meat reaches desired doneness (for medium-rare, a thermometer should read 135°; medium, 140°; medium-well, 145°). Let stand for 5 minutes.
3. Meanwhile, in a small saucepan, saute onions in butter until tender. Add wine; bring to a boil. Reduce heat; simmer, uncovered, for 10-15 minutes or until sauce is slightly thickened.
4. To serve, thinly slice steak across the grain; serve with sauce.