In a food processor, combine 200g all-purpose flour, 125 g diced, very cold unsalted butter and a pinch of salt.
Pulse until the butter is pea-sized, and add 1 egg
Pulse to combine
Add 1 tablespoon of ice water at a time, pulsing between additions until the mixture forms a ball in the mixer. Once this happens, stop adding water.
Remove the dough from the bowl, forming a 5-inch x 1-inch disc, and wrap well with plastic wrap.
Place in the refrigerator to rest for at least 30 minutes and up to 4 hours. Beyond 4 hours, you risk drying out the dough. At this stage, you can wrap and freeze the dough for up to 1 month, defrosting it overnight before you want to use it.
Place the sugar, water, and butter in a medium skillet over medium heat and cook until the water has evaporated, the mixture is bubbling, and it is a light golden brown.
Cut pears in quarters, remove seeds and gently toss them with a few pinches of sugar and ground ginger, then carefully place them into the skillet to cook in the caramel for 5-7 minutes.
The pears will release their water and caramelize, which is good!
Remove the pan from the heat and allow to cool
Once cooled, remove the pastry dough from the fridge and cut to fit the skillet. You’ll want about a finger width of the border around the skillet.
Lay the pastry on top of the pears and, using your fingers, gently tuck the pastry around the sides of the skillet, tucking in the pears to the pastry.
Using a paring knife, pierce the dough several times to allow air and steam to escape during baking.
Place skillet into oven and bake for 25 minutes or until the crust is golden brown.
Remove from the oven and allow to cool before using a plate to invert.
Serve fruit side up with creme fraiche, whipped cream or ice cream on the side.