Gourmet Cheese Potatoes

12 medium potatoes
4 cups shredded cheddar
1 stick butter
3 cups sour cream
1/2-2/3 cup chopped onion
2 tsp salt
1/2 tsp pepper
4 tsp butter, paprika

Cook potatoes in skins until just fork tender;
do not overcook. Peel and shred in food processor.
Melt cheese and stick butter; remove from heat and add sour cream, onion, seasonings.
Fold potatoes into pan and spread all into greased casserole. Dot with butter and paprika.
Bake 45 minutes at 350 degrees.