Mix all ingredients for the dough without lumps. The dough must be thick.
Put the dough in a greased cold pan. Now you can put your favorite ingredients on top. Whether tomatoes, mushrooms, tuna or pineapple. Everything you like. Finally, put a layer of sliced cheese (Maasdam, Edam, Tilsiter, etc.) on top.
Fry on medium heat until the cheese is completely melted.