Place the steak in the freezer at least 2-3 hours before you want to cook it. This will make cutting it into thin slices much easier. Begin by cutting the onion into thin slices.
After cutting the onion, cut the steak as thin as possible (doesn’t have to be perfect but avoid overly large slices).
Heat the frying pan with some olive oil over high heat. Add both the onion and steak into the frying pan.
Sprinkle on some salt and pepper to flavor. As you cook the steak you will notice some liquid from the onions. Continue to cook the onion and steak until most of that liquid has disappeared.
Add the French Onion soup to the pan. Lower the heat to medium, cover and allow the meat to simmer for 10 minutes.
After 10 minutes, take the lid off and allow the meat to cook until the liquid becomes thick. This will allow the steak to absorb the flavor of the French onion soup.
Once the liquid has thickened, place the steak on a roll and add any cheese you would like (go for a white cheese to keep it similar to the steak sandwich in-game). To give the bread that extra crunch, place the built sandwich in a pre-heated oven (at 375°F). Let the sandwich bake for about 5 minutes or until the edges begin to brown a little. It’s time to enjoy a delicious steak sandwich
