Epicurious
Ingredients
1 medium onion thinly sliced
1 TBL vegetable oil
1 TBL unsalted butter
1 1/2 TBL all purpose flour
1 1/4 C water
1 C canned beef broth
1 TBL Worcestershire sauce
1/4 tsp 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 min. Add flour and cook, stirring, 1 min. Stir in water, broth, Worcestershire sauce and pepper and simmer, stirring and scraping up brown bits, until gravy is slightly thickened, 8 – 10 min. Season with salt and additional Worcestershire sauce if desired.