First make coleslaw by mixing harissa mayonnaise, shredded cabbage and onions and keep aside.
Take one bread slice. Apply butter on it and then arrange potato slices on it. Above the potato slices keep cucumber slices followed by tomato slices. Apply butter on another slice and keep on prepared sandwich.
Then spread prepared coleslaw on second bread slice. Sprinkle grated cheese on it. Apply butter on third bread slice and keep on cheese.
Prepare all sandwiches like this.
Keep all prepared sandwiches in baking tray. Bake in an preheated oven for 7 to 10 mins at 180 degrees centigrade or till you get nice brown coloured on bread and cheese melts.
Serve hot with cold coffee and tomato ketchup.
