Onion Gravy

1 medium onion, thinly sliced

1 tablespoon of olive oil

1 tablespoon of unsalted butter

1 ½ tablespoons of flour

1 cup of water

2 cups of vegetable broth

1 tablespoon of Worcestershire sauce

Fresh ground black pepper to taste

Salt to taste

Cook the onion in the oil and the butter in a heavy skillet over moderately high heat, stirring frequently, until onion is softened and browned, about 15 minutes.

Add the flour and cook, stirring, 1 for minute.

Stir in water, the broth, the Worcestershire sauce, and the pepper and simmer, stirring and scraping up brown bits, until gravy is slightly thickened, 8 to 10 minutes.

Season with the salt and additional Worcestershire sauce and pepper as needed.