Onion Mustard Sauce

1. 1

   In a small saucepan, combine the onion and white wine and simmer over moderate heat until the wine is reduced to 1 tablespoon, about 5 minutes.

2. 2

   Add the heavy cream and bring to a boil.

3. 3

   Transfer the mixture to a blender and puree.

4. 4

   With the machine on low speed, add the butter, 1 piece at a time, until the sauce is smooth.

5. 5

   Scrape the onion sauce into a small saucepan and stir in the mustard.

6. 6

   Season with salt and pepper.

7. 7

   Rewarm the sauce over low heat, stirring constantly.

8. 8

   Serve the sauce warm.

* Per serving · 4 servings · Values may vary.