Saute onion in butter for 15 minutes. Add garlic and saute for 2 minutes. Add milk, salt, pepper and the onion mixture to the mashed potatoes. Add eggs and mix well. Roll out the bisquit dough to a 6 inch diameter. Place a tablespoon of the potato mixture in the center and roll into cylinders. Brush the knises with water and sprinkle with paprika. Bake for 15 minutes in a 400 degree oven. Serve.