In large zip lock bag, combine soy sauce, vinegar, olive oil, garlic, ginger, and black pepper. Using a fork, pierce flank steak several times on both sides and place in bag with marinade. Seal and refrigerate for at least 1 hour, or overnight.
Remove steak from marinade and place on a broiler pan. Broil 3 inches from heat source for about 6 minutes on each side.
Slice mushrooms and set aside.
Lightly coat a medium skillet with cooking spray and place over medium-high heat. Saute’ mushrooms for about 5 minutes.
Mix water and gravy mix in a small mixing bowl.
Add to the mushrooms and bring to a boil, stirring constantly. Reduce heat to low, simmer until thickened, about 5 minutes. Add any juice left in the pan from the steak to the gravy
Cook Mashed Potatoes according to package directions
Place frozen green beans in a bowl add ¼ tsp salt, ¼ tsp black pepper, and 1 tbsp butter buds, mix well and cook in the microwave for 3 minutes
Slice steaks across the grain into 1/8 inch slices.
Place mashed potato with a serving sliced meat on top, serve with Italian green beans on each plate. Top steak with gravy.
Serve and enjoy