Bobby Flay Salisbury Steak

Ingredients:
For the Steaks
1 lb ground beef
1/3 cup breadcrumbs
1/4 cup milk
1 egg
1 tablespoon Worcestershire sauce
1 teaspoon Dijon mustard
1/2 teaspoon onion powder
1/2 teaspoon garlic powder
Salt and pepper to taste
1 tablespoon olive oil, for frying
For the Mushroom Gravy
1 tablespoon butter
1 small onion, finely chopped
8 oz mushrooms, sliced
2 tablespoons all-purpose flour
2 cups beef broth
1 tablespoon Worcestershire sauce
Salt and pepper to taste
Instructions: