1tspcoarse Kosher salt(if using table salt, use half the amount)
10tbspcold unsalted butter
1large egg,with the yolk and white separated
Instructions
Make the Dough
In a bowl, combine the flour, sugar and salt.
Add the cold butter and cut it in with a pastry cutter until crumbly and well combined.
Add the egg yolk, stir it in, then get your hands into the dough and rub the yolk and butter into the dough crumbs until moistened. If you can squeeze the dough together in your hand and the crumbs hold together, then it's ready to press into the pan.
Note: The dough is very easy to make using a food processor as well. Instead of pressing crumbs into the pan, you can continue to work the dough until it comes together into a ball, and roll it out onto a floured surface. The rolled dough is fragile, so you'll need to transfer it to your pan carefully. Patch up any cracks with extra dough. If the dough seems too dry to come together into a ball, add a few teaspoons of ice water to moisten it just enough to bring the dough together.
Pile the crumbs into your tart pan, then spread them out and evenly and firmly press them against the bottom and up the sides of the pan.
Freeze the crust for 30 minutes.
Bake
Preheat the oven to 375 F.
Fit a piece of parchment paper into the frozen crust, and fill the paper with dried beans or pie weights.
Bake the crust on the center oven rack for 20 minutes.
Remove from the oven, and carefully remove the beans and the parchment paper. Lightly brush the crust with the egg white.
Return the crust to the oven and bake for an additional 10-12 minutes, until golden brown and baked through.
Let cool, then fill with your favorite tart fillings.