For marinade: Combine first 9 ingredients in large bowl; blend well. Whisk in olive oil. Add mushrooms and onion and toss lightly to coat. Set aside. For sauce: Melt butter in small saucepan over medium heat. Stir in flour and blend well. Reduce heat to low and cook 2 minutes. Blend in milk, broth, sherry, mustard, and curry powder. Bring to boil, stirring constantly. Remove from heat. Taste and season with salt and pepper. To assemble: Preheat over to 350 F. Arrange bread on baking sheet. Divide mushrooms evenly among slices, mounding slightly in center. Top each with about 3 t of sauce and sprinkle with 1/2 C cheese. Bake until sandwiches are heated through, about 20 minutes. Di Note: I served this one New Years Day to a bunch of raving football fanatics and they actually took time to comment (between grunts) and ask for more. Amazing. Di Pahls personal recipes-1994 Collection of recipes from "Great Sysops of the World" from COOKFDN ops. File ftp://ftp.idiscover.co.uk/pub/food/mealmaster/recipes/mmgsotw1.zip