Basic Steak Sandwich - cooking recipe

Ingredients

1 sirloin steak (cooked medium rare, but you can cook it as you like)
1 tablespoon barbecue sauce
salt
pepper
1 yellow onion (small)
1/2 lb mushroom
vegetable oil (you may use your preferred cooking oil if you don't like vegetable oil)
bread (I like using 6-inch toasted sub)

Preparation

Once your stake is grilled, slice it into thin strips.
Place bbq sauce a little salt and a little pepper in a bowl.
Add the steak to the bowl and mix the ingredients together until the steak is coated well. You may add more sauce if you need to.
Peel the onion; slice thinly.
Slice mushrooms into medium sized slices.
Turn stove to high.
Place a large skillet on the stove.
Add mushrooms and onions and a few table spoons of cooking oil.
Stir while cooking; the mushrooms and onions should become soft and slightly brown.
Add the mushrooms and onions to the open sub.
Place the strips of steak on top.
I like to drizzle a little ketchup on top, but thats up to you.
Enjoy!