Preheat the oven to 350 degrees F.
Heat the butter in a well-seasoned fry pan. Saute the steak cubes until lightly browned. Add the mushrooms to pan and season salt and pepper;' saute until lightly browned. Add the brown gravy and mix thoroughly. Place into the bottom pot pie shell, and place the top shell over the filling.
Bake until heated through, about 15 minutes.
Serve with your favorite mashed potatoes and vegetables.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy of Tomahawk Restaurant, Vancouver, B.C.