Instructions: Preheat oven to 400 F. In a medium bowl combine ham, Vidalia onion, tomatoes, mayonnaise and mustard. Arrange bread in a large baking sheet; top with ham mixture. Bake until heated through, 10 to 15 minutes. Serve immediately at room temperature.

Note: Onion and ham mixture can also be served cold as a sandwich filling in hollowed-out hard rolls or pita breads.

NOTES : Serve fresh onions on the side. To make Vidalias even crispier for use in sandwiches, peel and cut the onions into slices or wedges and place in a bowl of ice water for about 30 minutes.

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