In a bowl, stir together your flour and salt. Using two butter knives, held against each other with one in each hand to form an “X,” cut your butter into your dough, with the knives pulling away from each other and back in, until you have a sand-like consistency
Add in your water (I like to put a few ice cubes in a glass before filling it with cold water to make sure it’s extra cold), stir together, and then compress the dough into a ball. See notes below if you have a food processor!
Place your dough ball between two large pieces of parchment paper and roll it to ⅛” thickness, making sure your dough is an even thickness throughout.
Gently peel the parchment back from the top layer, lay it back onto the dough, flip all of it over, and repeat with the bottom (now top) layer of parchment.
Cover your dough with the other piece of parchment paper and place your flat crust in the fridge for 15 minutes while you prep your filling
Preheat your oven to 400F
Add your cream cheese to a bowl and sift in your powdered sugar. Use a spoon to blend together
Trim the top and bottom off of each orange, then, using a pairing knife, carefully cut the skin of the orange (including the pith, aka the white stuff) from the orange. Work in a circular motion to trim this off, trying not to cut off any excess “meat”
Once trimmed, place your oranges on their sides and cut into ½” discs
Remove your dough from the fridge, peel the parchment off the top, and place onto your baking sheet, parchment side down
To assemble for baking, spread your sweetened cream cheese in a circle in the center of your rolled dough, leaving about a 2-inch rim (where you don’t spread the cream cheese). Starting from the outside edge of your cream cheese, lay your orange discs in a spiral, with one edge slightly on top of the next, until you reach the center
Carefully fold your crust over the edge of your oranges, leaving the middle open. As you fold it in, work in a circle to fold one section over the next so you don’t have any gaps. If your dough cracks a little, just pinch it together
In a bowl, whisk together your egg and a splash of milk or water until combined. Brush your crust with your egg wash and sprinkle with coarse sugar
Bake for 40-45 minutes until it is golden brown along the edges. Remove from the oven and allow to cool on the pan for 15 minutes
While your galette cools, make your salted caramel by combining your sugar and water in a big pot. Use the end of a spoon or a spatula to gently cover all the sugar with the water. It should look like wet sand. Make sure no sugar is stuck on the sides of the pot (not in the water), or it will burn
In another small pot, add your heavy cream
Place your pot with water and sugar on the stove over high heat. Do not stir!
When your sugar-water mixture starts to turn lightly brown (straw-colored) around the edge, place your pot with heavy cream on another burner over med-high and heat until steaming
Keep a close eye on your sugar/water mixture as it turns light brown. Once you see brown around the edges, keeping your pot flat on the stovetop, lightly swirl it to move the browning around and evenly color your liquid. Once it is the color of light wood, immediately remove it from heat (it will continue to brown in the pan) and place it on your counter.
Carefully stream your scaling heavy cream into your browned sugar/water pot. It will bubble, so allow the bubbles to subside before continuing.
Add in one piece of your lightly softened butter at a time, whisk in, and repeat until all is incorporated
Sprinkle in your sea salt, whisk in
Allow to sit for 5 minutes before giving a quick whisk and drizzling over your galette
Slice and enjoy!