Preheat oven to 400 degrees.

Wash and dry potoatoes.

Cook in the microwave for 12 minutes or until done.

Cut potatoes in half and scoop out the pulp and put into a mixing bowl with the butter.

Mash until combined leaving as many or few lumps as you like.

Add the milk, 1/2 of the scallions and salt and pepper.

Cut the skins into chunks and add to mixture.  Stir.

Pour into a greased 8*8 pan and sprinkle cheese on top.

Cook for 20 minutes or until is golden and bubbly.

Remove from oven and sprinkle with remaining scallions.  

You can prepare ahead of time but increase your cooking time to 30 minutes or until done.