Plum Cheesecake Galette - Local Roots NYC

Ingredients

• 1 ¼ cup Local Roots all-purpose flour, plus more for rolling
• 1 tablespoon granulated sugar
• ¼ teaspoon kosher salt
• 1 stick (8 tablespoons) cold unsalted butter, diced
• 1 large pasture raised Local Roots egg beaten with 1 tablespoon cold water
• 8 ounces Local Roots cream cheese, room temperature
• 2 tablespoons granulated sugar
• 1 ½ teaspoons pure vanilla extract
• 1 large Local Roots egg, separated
• Pinch of kosher salt
• 2 ripe Local Roots plums halved, pitted and thinly sliced
• ⅓ cup lightly packed light brown sugar
• 2 teaspoons cornstarch
• Coarse sugar, for sprinkling