Lightly brown the chopped onion and garlic, add the tomatoes and cook for about 30 minutes to make a light and fresh tasting sauce.
Dip the crisp Sardinian bread in boiling water for a moment. Remove.
On a large plate arrange a bit of the sauce, a slice of the Sardinian bread, a sprinkle of the grated Fiore Sardo cheese. Top with more sauce, another slice of the bread and so on. Build it like you would a lasagna.
Top the last slice of crisp bread with a last sprinkle of Fiore Sardo cheese, the two fried eggs and some dabs of butter.
Serves 6
