Plum Galette

Directions

1. 1
   Put oven rack in middle position and preheat oven to 375°F. Line a large (17- by 12-inch) baking sheet with parchment paper.
2. 2
   Roll out dough on a lightly floured surface with a lightly floured rolling pin into a 13-inch round. Transfer to baking sheet.
3. 3
   Stir together semolina flour and 2 tablespoons granulated sugar and spread evenly over dough, leaving a 1-inch border. Arrange plums, skin sides down, in 1 layer on top of sugar mixture, then sprinkle plums with 3 tablespoons granulated sugar. Fold in edge of dough to cover outer rim of plums, pleating dough as necessary.
4. 4
   Bake galette, loosely covered with a sheet of foil, 40 minutes. Remove foil and bake until fruit is tender and juices are bubbling, about 5 minutes more.
5. 5
   Transfer galette on baking sheet to a rack and immediately brush hot juices over plums using a pastry brush. Dust hot galette with confectioners sugar (sugar will melt and help glaze galette). Cool to warm or room temperature, about 30 minutes.
6. 6
   While galette cools, stir together crme frache, Armagnac (if using), and remaining 3 tablespoons granulated sugar in a bowl until sugar is dissolved. Serve galette with Armagnac cream.