French Onion Burgers: 
1 pound ground beef 
1 tablespoon Worcestershire sauce 
1 tablespoon Onion Soup Mix
Salt and pepper, to taste

Topping: 
2 tablespoons butter 
1/2 pound fresh mushrooms, sliced 
1 teaspoon beef bouillon granules 
2 tablespoons dry white wine 
Salt and pepper, to taste 
3 ounces Swiss cheese, sliced 

Sauté the mushrooms in butter until tender. Add the bouillon and wine; cook over high heat briefly to evaporate most of the juices. Season with salt and pepper, to taste.

Meanwhile, mix the ground beef, Worcestershire sauce, onion soup mix, salt and pepper. Shape into patties. Grill the hamburgers and top each with a slice of Swiss cheese. Smother with the mushrooms.