Allow potatoes to stand at room temperature 2 to 3 minutes after baking.
Cut a thin slice from the top of each potato., Caution: potato will be hot.
With a spoon, remove the potato pulp from each potato, leaving a thin shell.
Mash potato pulp with a fork or potato masher.
Add butter, milk, egg, salt, pepper and cheese. Whip potato mixture with a rotary beater or electric mixer until light and fluffy.
Spoon mixture into shells and sprinkle with paprika. Place potatoes on a paper plate and heat, uncovered, in Microwave Oven 5 minutes.
If desired, after cooking in Microwave Oven, potatoes may be placed under the broiler unit of a conventional oven to brown for a few minutes.
Transfer from paper plate before browning.