Step 1

Preheat the oven to broil.

Step 2

In a medium-sized bowl, combine the mayonnaise, wine, scallion and mustard; mix well. Stir in the Swiss cheese; set aside.

Step 3

Place bread slices on baking sheet. Broil 3 to 5 minutes or until lightly toasted.

Step 4

Remove from oven and spread the cheese mixture evenly over each slice. Return to the oven 3 to 5 minutes or until the cheese is brown and bubbly.