Season the beef with salt and pepper
Thoroughly mix the beef, ¼ cupsoup,bread crumbs, onion and egg in a large bowl
Shape the beef mixturefirmly into 4 (½-inch-thick) burgers, and flatten the centers to prevent puffing
Heat a 10-inch nonstick skillet over medium-high heat
Add the burgers and cook until well browned on both sides (to prevent sticking- make sure the skillet is hot before adding the burgers)
Remove the burgers from the skillet
Reduce the heat to medium and heat the oil in the skillet
Add the mushrooms and cook for2 minutes or until tender, stirring occasionally
Stir the remaining soup, Worcestershire and water in the skillet and heat to a boil
Return the burgers to the skillet
Reduce the heat to low
Cover and cook for 10 minutes or until the burgers are done
Serve the burgers with the mushroom gravy
