Maple Yeasted Sugar Pie (Belgian Tarte au Sucre)

Directions

1. 1
   Heat milk and granulated sugar to about 110F (about 20 seconds in microwave on high).
2. 2
   Pour into bowl of standing mixer and sprinkle with yeast.
3. 3
   Let stand several minutes until yeast is frothy.
4. 4
   Add flour and salt; beat to combine. Beat in egg and melted butter. Turn out onto a clean work surface and knead for a few minutes, then return dough to ball and let it rest for 30 minutes.Preheat oven to 400F. Butter a 9"x2" pie dish, then press dough into the bottom and up the sides. Prick crust several times with a fork.
5. 5
   Sprinkle bottom evenly with the brown sugar.In a medium bowl, whisk together remaining filling ingredients.
6. 6
   Pour over crust and bake 25-30 minutes, until filling is set and browning. Cover crust with foil or a pie protector if it is getting dark. Cool pie at least 30 minutes on a wire rack before serving. May be served warm or room temperature, with whipped cream if desired.