Twice-baked potatoes

My last post of twice-baked sweet potatoes had me thinking about twice-baked potatoes.  I love twice-baked potatoes - and aside from the amount of time they take, they are really very easy.  You can mix anything into the middle that you want - I usually keep it pretty simple.  What follows is my basic recipe.

4 mid-sized potatoes
1/3 c. sour cream
1/2 c. shredded cheese, plus extra for topping
4 Tbsp. butter
1/4 small onion, minced
1 tsp. pepper
1 tsp. salt

Wash and prick potatoes and then bake in the oven or in the microwave (I have a potato setting on my microwave, but it is usually about 15 minutes, or almost an hour in the oven).  Slice the tops off and scoop out the potato flesh, leaving about a 1/4 inch so your potato boats are sturdy.  Place the potato flesh into a bowl with the sour cream, 1/2 c. of cheese, butter, onion, salt and pepper; mash well and spoon back into potato boats.  Top with cheese and bake for 30 minutes in a 350 degree oven (or until cheese is melted, bubbly, and brown).  Serve hot.