London Broil - With poultry

1 1/2 lb London broil 1/2 c. extra virgin olive oil plus     more for brushing steak     Salt to taste     Freshly-grnd black pepper to taste 1/4 c. balsamic[...]

2 lb London broil , cut at least 1" thick 1/2 tsp coarse salt 1 tsp freshly-grnd black pepper 3 Tbsp. cornstarch 1/4 tsp dry thyme 1/4 x strip breakfast[...]