Skillet Salisbury Steak Recipe - (5/5)

Ingredients

• Gravy:
• 1 pound ground beef
• ½ cup bread crumbs
• 2 Tablespoons ketchup
• 1 Tablespoon Worcestershire sauce
• 1 teaspoon mustard powder
• 1 egg
• salt and pepper
• 2 Tablespoons butter
• 1 tablespoon olive oil
• 6 ounce mushrooms
• ½ large onion sliced
• 2½ cups beef broth
• 2 Tablespoons Worcestershire sauce
• 1 Tablespoon cornstarch
• 1 Tablespoon water