Cook potatoes, peel and Strain. Mix with cream, 70 g of the butter and 70 g of Parmesan. Seasoned with salt and pepper. Spinach infused, strain and cut. Fry in butter rest for 1-2 minutes. Remove from heat and add the cottage cheese and 200 g of potato mixture. Mix well. In an oiled pan put first spinach mixture on top ranks the feta cheese, cut into thin slices and ends with potato mixture. And smoothed with a larger spoon shaped wells eggs. Sprinkle with a little pepper, salt and remaining amount of parmesan. Bake for 15 minutes in a preheated 170 C oven.