Active Time

　　30 min

　　Total Time

　　30 min

Ingredients

　　1 medium onion, thinly sliced

　　1 tablespoon vegetable oil

　　1 tablespoon unsalted butter

　　1 1/2 tablespoons all-purpose flour

　　1 1/4 cups water

　　1 cup canned beef broth

　　1 tablespoon Worcestershire sauce

　　1/4 teaspoon black pepper

　　Cook onion in oil and butter in a 12-inch heavy skillet over moderately high heat, stirring frequently, until onion is softened and browned, about 15 minutes. Add flour and cook, stirring, 1 minute. Stir in water, broth, Worcestershire sauce, and pepper and simmer, stirring and scraping up brown bits, until gravy is slightly thickened, 8 to 10 minutes. Season with salt and additional Worcestershire sauce if desired.