What can be done with Norwegian brown cheese Brunost other than a sandwich?
Brunost is often used in Norwegian cooking, especially in brown sauces.
E.g. like this.

I have personly used brunost for such a recipe, and it does add a very nice flavor to the sauce.

Here is a link to several recepies using brunost, from Tine the biggest maker of brunost in Norway)

Hope this helps,
Best wishes from Norway!