This is an easy recipe and it is my grandkids most favorite meal that I fix. I got the recipe from my brother-in-law years ago. I don't make the wine sauce except for company as my grandkids like it just plain.
- Brush flank steak with soy sauce and sprinkle with thyme, salt and pepper to taste. Do both sides. Let marinate for 1 hour or longer. Just before grilling, brush it again with soy sauce. Grill 6-7 minute each side depending on how you like it. Let sit for a couple of minute and then slice thinly at an angle.
- Bring wine and onions to boil, add butter and simmer for a short time. Serve over steak or let everyone put their own sauce on their steak.