Step 1

In a medium-sized saucepan over medium heat, melt the butter (or heat the oil). Then, add the shallot and cook for 2 minutes, stirring often.

Step 2

Add the cream and increase the heat to medium-high. Simmer rapidly for about 10 minutes, stirring occasionally and allow the mixture to thicken and reduce slightly. Reduce the heat as necessary to keep from boiling over.

Step 3

Remove from the heat and stir in the blue cheese, Parmesan, vinegar, salt, pepper, and chives. Serve and enjoy!