Preheat the oven to 400°F (200°C).
Roll out the pastry on a floured surface as thinly as possible without tearing it – about ¼ in (5mm) thick. Lightly grease two 12-hole muffin tin with oil and choose a cookie cutter that’s slightly wider than the holes in the tins.
Punch out about 21 rounds of pastry and place them into the tin holes. Line each quiche tart shell with a piece of baking paper or cupcake case and fill with raw rice or baking beans. Bake in the oven for 10 minutes, then remove (carefully removing the paper and rice/beans too) and leave to cool.
Make the filling by whisking together the eggs, cream, cheese and some salt and pepper in a bowl. Fill the par-baked tartlets about two-thirds full with the egg mixture, then add the filling variations. Put chopped Parma ham and sun-dried tomatoes in half of the tarts and the spinach and red pepper in the other half.
Bake in the oven for 20 to 25 minutes, until golden. Leave to cool on a wire rack before serving.