Prep Time: 10
Cook Time: 42
Serves: Serves: 6
Melt butter in large saucepan. Add onions and garlic; cook 30 minutes or until very tender, stirring occasionally.
Stir in beef broth, wine and Worcestershire sauce; heat to a boil. Reduce heat; simmer 10 minutes.
Ladle into 6 ovenproof bowls. Place 1 Swiss cheese triangle over each portion of soup; top with 1 slice French bread. Place remaining Swiss cheese triangles over bread; sprinkle with Parmesan cheese.
Place under preheated broiler 5 inches from heat; broil 2 minutes or until cheese is melted and golden.