Beaujolais Nouveau meets Rustic onion tart

Yesterday it was that certain day of the year, -third Thursday of November. After work I went to buy bottle of this year's Beaujolais Nouveau, and after that it was time for cooking. Earlier we have eaten cold cuts and cheeses with BN, but this year I wanted something with onion. After long search I found very nice recipe of onion tart from the Food&Wine. And I made that! It was delicious, and went nice with the wine. I'm pretty sure, that this tart shall be done many times in my kitchen in a future as well.

For the tart, I made only ½ portion of the dough from original recipe, because I prefer thin crust and wanted onions to shine.

Rustic Onion Tart
For 4 persons
Dough
125 ml all-purpose flour
1/4 teaspoon salt
45 g unsalted butter, cut into small pieces and chilled
35 ml ice cold water
Filling
50 g butter
1 kg sweet onions, thinly sliced
2 gloves garlic
6 thyme sprigs
Salt and freshly ground pepper
1 egg beaten with 1 tablespoon of milk

In a bowl, whisk the flour with the salt. Using your fingers, rub the butter into the flour until the mixture resembles coarse meal. Drizzle the water over the flour and stir gently just until incorporated; gently press to form a dough. Flatten the dough into a disk, wrap in plastic and refrigerate for 1 hour.
In a skillet, melt the butter. Add the onions and thyme and cook over moderately high heat, until softened, about 10 minutes. Reduce the heat to moderately low and cook, until the onions are golden, 20 minutes longer. Remove from the heat and discard the thyme, season with salt and pepper. Let cool.

Set a pizza stone on the bottom of the oven or position a rack on the lowest rung and preheat the oven to 190° C. On a floured work surface, roll out the dough to a 30 cm round and transfer to the baking sheet. Spread the onions on the round, leaving a 3 cm border. Fold the edge of the dough up and over the filling and brush the edge with the egg wash.

Bake the tart on the stone or on the bottom shelf for about 40 minutes, until the dough is richly browned on the bottom.
Transfer the tart to the top shelf and bake for about 5 minutes longer, until the top of the crust is browned. Transfer the tart to a rack and let cool slightly. Cut the warm tart into wedges and serve.

Original recipe: Food & Wine