Preheat oven to 350 degrees.

In a bowl, combine the mustard honey, and brown sugar until well blended.

Slice croissants in half and spread some of the mustard mixture on each side of the croissants.

Place a slice of swiss on the bottom half of each croissant and then top with ham. The place one more pice of cheese on top of the ham.

Place top half on each sandwich. Wrap in foil. Place in the refrigerator for later or bake right then.

Bake at 350 degrees for 10 to 15 minutes. Serves 4.