I made this recipe for a friend's 40th birthday party a year ago, and I remember it being such a hit that I decided to make it again for a White Elephant Christmas party. I think Ina Garten hit the nail on the head with this appetizer. I love me a ham and cheese sandwich, but adding puff pastry to the mix just takes this rather plain sandwich to another level. Also, substituting gruyere cheese in place of swiss cheese makes it even fancier. And, using Dijon mustard instead of plain ol'…
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