Bake (lower rack) for 25 to 30 minutes, until the torte rises and is golden brown on top and a toothpick inserted in the center of the cake emerges free of batter, other than a little melted chocolate ...
The dish remains party- and buffet-friendly. With no crust, it's not really a quiche. So I'm calling it a torte. You might be able to get away with omitting the flour, but it's good insurance against ...