This crustless spinach quiche could not be easier to make, or more delicious. There's no crust to roll out, so it's ready in a snap ... The difference between a frittata and a crustless quiche comes ...
Spoon the filling into the pastry case and sprinkle the remaining Gruyère on top. Bake the quiche for 15 minutes, or until the filling is set. Serve hot or cold with a green salad.
Trim the pastry edges to get a perfect edge and then serve in wedges. To freeze the quiche Lorraine: Allow to cool completely after step 8, then wrap in cling film. Freeze for up to 3 months.