Preheat oven to 350°F

1. For the pastry, mix together the butter, sugar, then add the egg and flour until a smooth pastry is obtained. Shape into a ball and wrap in plastic wrap. Refrigerate for 40 minutes.

Meanwhile, prepare the Breton filling:

2. Mix together the milk, cream, then add the sugar and cider. Gradually add the flour to obtain a smooth mixture. Set aside.

3. Roll out the pastry and line your mold, then fill the tart with the Breton filling to half height.

4. Arrange the apples.

5. Bake for 20 to 30 minutes.