Preheat oven to 180 degrees C and butter a tart tin.
Roll out the pastry and place in the tin, trimming the edges. Prick the bottom all over with a fork and line with a circle of baking paper. Add some dried beans or rice and blind bake the pastry for 20 minutes. Remove and let cool a little (remove the beans and paper).
Peel the apples and finely dice two of them. Spread the diced apples over the bottom of the tart. Thinly slice the remaining apples and arrange over the top in a circular pattern.
In a bowl, beat together the egg yolks, caster sugar and cream. Pour evenly over the top of the apples. Bake for 40 minutes.