this is something that can be done sooo many different ways and it always comes good. i never measure a thing, so yall have to try your luck if you want to try this. the under part (what you call it?) has only butter, white flour and a drop of cold water.
the filling has two cans of fresh cream (=soured cream, it can also be one can fresh and one normal cream), big cup of grated cheese, 2 eggs and spices.. and a can of tuna of course. instead of tuna it can be also shrimps, smoked turkey, veggies , for example tomato slices, etc.. some of the cheese can be replaced with feta cheese.