Bethany's Yummy Potato Casserole

4 pounds potatoes, peeled
1 8oz pkg cream cheese
1 c sour cream
2 tsp salt
1/8 tsp pepper
1 garlic clove, chopped
1/4 c chopped fresh chives
2 tsp butter
1/2 tsp paprika

Boil potatoes until done. Beat with electric beater. Add next five ingredients. Beat until fluffy. Fold in chives. Put in greased baking dish. Dot with butter and sprinkle with paprika. Bake at 350 for 30 minutes.