Breakfast Bagel Sandwich

1. 1

   ["Spread the toasted bagel halves with butter or mayonnaise.", "Arrange the bagel halves, cut side up, on a toaster oven tray.", "Layer the prosciutto slices on top of one bagel half; top with onion and cheese slices Slide the cheese topped bagel half into a toaster oven, and heat on the top brown or toast setting until cheese melts.", "(Or place the bagel half on a broiler pan under preheated broiler, 4"" from the heat suorce, for about 1-1 1/2 minutes, or just until cheese melts) Top with second bagel half.", "Serve the sandwich immediately with deli mustard."]

* Per serving · 4 servings · Values may vary.