Peel the potatoes, cut and boil them with the onions and garlic. After boiling, mash them and add the sliced crab rolls, processed cheese, mushrooms, egg and spices. Put the sesame seeds in the mixture also.
With a spoon, scoop from the mixture, roll it in breadcrumbs and fry it to a golden crust. You can use this same mixture as an addition to a main dish.
Another option that I've tried is to divide it in 2. Place one half in a greased tray, place minced meat on top, which has been fried with some tomatoes.
Then pour on the other half of the potato mixture and bake.