Step 1

Place a saucepan over high heat, add the butter, garlic, onion, salt, and pepper and saute until the onions start to turn translucent.

Step 2

Add the mushrooms and saute for 3 minutes before dropping the heat to low.

Step 3

Add the Worcestershire sauce, dijon mustard, and cream. Simmer for 10-15 minutes until the sauce thickens.

Step 4

Stir through the tarragon and serve.