Onion-Mustard Gravy For British Bangers And Mash

1. 1

   Melt butter in a heavy-bottomed pan over medium heat. Cook and stir onion in the melted butter until softened, about 10 minutes.

2. 2

   Reduce heat to low. Cover the pan and cook until onions are caramelized, stirring occasionally, about 20 minutes.

3. 3

   Stir flour into the caramelized onions and cook for 1 minute.

4. 4

   Pour red wine, chicken stock, Dijon mustard, and Worcestershire sauce into the onion mixture; simmer until sauce is thickened, stirring frequently, about 15 minutes.

5. 5

   Season to taste with salt and black pepper.

* Per serving · 4 servings · Values may vary.