Onto four of the slices, layer grated cheese, ham, a generous amount of sauerkraut and/or kimchi (for a spicy kick), or a spoonful of relish. Add one more layer of grated cheese, and top with the creme fraiche spread slice of bread.
Heat a skillet or fry pan over a medium heat, or use a sandwich press. When hot, place layered bread into skillet or sandwich press, and cook for two minutes each side, or until toast is golden and cheese is melted. If using a sandwich press, don’t press down too hard.
Place on plates, cut in half, and serve warm to maximise that creamy cheesiness.