Loved this recipe. I salted top sirloin steak and then only marinated it for 2 hours. I will definitely marinade overnight next time. Normally I'm not a fan of onions, but they were so great here, I used purple onions. I doubled the amount of marinade, half for the steak and half for the veggies. This was wonderful on the griddle, maybe higher heat and shorter time next time. I did 4 min each side.
