Fry the fish fingers in oil until golden brown and place on kitchen paper to degrease them.
Dice the ham and onions and cut the mushrooms into slices. Then fry the ham and onions in the pan in which the fish fingers were fried beforehand. Add the mushrooms and fry them. Dust with flour and sweat the flour briefly. Deglaze with water and cream. Stir in tomato paste and curry ketchup and bring to the boil. Season to taste with the spices.
Place the fish fingers in a baking dish and pour the sauce over them. Then sprinkle the cheese over it. Baked in a preheated oven at 180 ° C (top / bottom heat) until the cheese is golden brown.