Lightly flour the work surface and roll out the pastry to a circle
Line the tin with the pastry, taking care not to have any holes or the mixture could leak. Cover and rest for a further 30 minutes in the fridge
Preheat the oven to 190°C.
Line the pastry case with greaseproof paper, add baking beans and bake blind for 15 minutes, before removing the greaseproof paper and baking beans
Reduce the oven temperature to 160°C.
Beat together the milk, cream, eggs, herbs and seasoning.
Scatter 1/2 of the grated cheese in the blind-baked base, top with the chopped spinach and beans and herbs, then pour over the liquid mixture
Sprinkle over the remaining cheese. Place into the oven and bake for 20-25 minutes until set and lightly golden