01 -
Preheat the oven to 180°C (350°F) and lightly grease a round baking dish with olive oil.
02 -
In a large bowl, mix the grated potatoes with the egg, flour, salt, and pepper. Press this mixture into the bottom and sides of the baking dish to create a crust.
03 -
Bake the potato crust for 15-20 minutes, or until golden and slightly crispy.
04 -
In a pan, heat the olive oil and sauté the onion until translucent. Add the spinach and cook until wilted. Drain any excess liquid.
05 -
In a bowl, whisk the eggs with the heavy cream, seasoning with salt, pepper, and nutmeg. Add the crumbled feta (or ricotta) and grated cheese.
06 -
Mix the cooked spinach with the cheese and egg mixture, then pour it over the baked potato crust.
07 -
Bake the tart for 30-35 minutes, or until the filling is set and golden on top.
08 -
Let the tart rest for a few minutes before serving.