In A Small Bowl, Combine The Crab, Onions, Cheese, Worcestershire Sauce And Mustard; Set Aside. In A Large Saucepan, Bring Water, Butter And Salt To A Boil. Add Flour All At Once And Stir Until A Smooth Ball Forms. Remove From The Heat; Let Stand For 5 Minutes. Add Eggs, One At A Time, Beating Well After Each Addition. Continue Beating Until Mixture Is Smooth And Shiny. Stir In Crab Mixture. Drop By Tablespoonfuls 2 In. Apart Onto Ungreased Baking Sheets. Bake At 400