The Lom bakery is often refered to as the finest bakery of Norway. It was founded in 2004 by a famous chef Morten Schakenda. The products include bread, pastries, and there is also indoor and outdoor cafe, where you can buy coffee and sandwiches or other snacks.
More information (in Norvegian) and photos are available at the bakery
website or at
this article at a culinary blog dedicated to Norvegian food.