Created by Papa_D "RIP" Forever in our Kitchen on November 7, 2011
Step 1: Heat the oil in a medium sized saucepan over medium high heat. Add the onions and sauté until brown, about 20 minutes, stirring often.
Step 2: Sprinkle the flour over the onions and continue to cook, stirring, for 2-3 minutes. Gradually add the stock, and Worcestershire sauce and continue to cook until thickened.
Step 3: Cover and cook, 10-15 minutes to allow the flavors to develop, stirring from time to time.