Fluffed Puffed Cheese

Directions

1. 1
   After taking the cooked potatoes out of the oven, lower the temperature to 350 degrees F.
2. 2
   Cut a 1/2 inch slice off the top of each potato and scoop out the flesh to leave a 1/4 inch thick shell.
3. 3
   Mash the flesh, with the butter, mustard and egg yolks.
4. 4
   Stir in the cheese, ham, chives, and salt and pepper.
5. 5
   Whisk the egg whites until fairly stiff and fold into the potato mixture.
6. 6
   Pile back into the shells and bake for 20 minutes until puffed and lightly browned.
7. 7
   Serve hot with a crisp green leafy salad.