Alsatian maple tart

Preparation

1. Preheat oven to 190°C (375°F).
2. Butter a 20 cm (8") pie dish. Line dish with pastry dough. Cover with apple slices in a rosette pattern.
3. In a bowl, whisk together eggs, egg yolk, cream, nutmeg, vanilla, flour and 110 g (4 oz) maple sugar. Pour into pie crust.
4. Reduce oven temperature to 180°C (350°F). Place the pie in the center of the oven and bake for about 35 minutes, or until the crust is golden and the filling is set.
5. Remove tart from oven. Sprinkle with remaining maple sugar and let cool 15 minutes before serving.