We’re not sure this is a classic Danish open faced sandwich in the sense that the toppings are a bit untraditional. Fried sage and Dukkah? That’s not what you would typically see in a Danish sandwich shop. But the concept is very typical: Meatball sandwiches are seen everywhere and classic toppings includes sweet pickles, lettuce and mushrooms. We just improvised on the theme, adding a bit of San Diego flair…
Optionally: Add 3 tsp butter, spread out on top before baking.
Slice the potatoes into 1/4 inch thick slices. Lay them out in a casserole. Mix everything else together and pour over the potatoes. If the cheese stays on top then mix it in. Place casserole in the middle of a pre-heated oven at 400 degrees for 45 minutes. If the potatoes starts getting burned, turn oven down to 450, and cover with aluminum foil. Leave them an additional 10 minutes in that case. We have a very bad oven, we know.