This savory deep-dish pie features herbed feta cheese that melts and mingles in every bite. The cheese is sauteed and mixed with spinach, mushrooms, Cheddar cheese and lots of garlic. This mixture is then combined with milk and eggs, and poured into a prepared crust. A bit more Cheddar cheese is sprinkled over the top, and then the quiche is slipped into the oven until it 's set.
