Pre-heat your oven to 200°C/fan 180°C.
Blind-bake your 25-30cm crust using your favoruite method, at home, I'm partial to baking paper and rice, for 15 minutes. Remove the rice and paper and bake for a further 10 minutes, or until matte and light golden brown.
In the meantime, make the filling. Sauté the spinach in a hot frying-pan with a teaspoon of oil until it wilts. Season with salt and pepper to taste, and squeeze through a sieve to get rid of excess moisture. Cut into smaller pieces if you wish.
In a bowl, combine the eggs, cream and half the cheese, Mix using an immersion blender and season to taste.
When the crust is ready, reduce the oven temperature to 200°C/fan 180°C.
Arrange the spinach at the bottom of the crust, top with the remaining cheese and place in the oven. Carefully pour the egg mixture on top.
Bake the quiche for approximately 25-30 minutes until the filling is set and golden brown. Allow to cool slightly before slicing into wedges.