Preheat oven to 375 degrees and line a baking sheet with parchment paper. Pull your pie crust from the fridge to soften while you make the filling.
Combine apples, brown sugar, lemon juice, cornstarch, cinnamon, and salt in a large bowl, tossing to combine and coat the apples.
Roll your pie crust out onto the lined baking sheet. Arrange the apples in the middle of the dough, leaving space 2 inches from the edges all the way around.
Gently fold the edges of the dough over the apples all the way around (don’t press the dough into the apples).
Whisk together the egg and cold water and gently brush the egg wash over the edges of the galette. Sprinkle the cubed butter over the apples evenly.
Bake in the preheated oven for 40-45 minutes, or until the galette is golden brown and the apples are cooked through. Allow to cool at room temperature for about 30 minutes, then serve!
Notes
Deliciously served with whipped cream, caramel sauce, and/or ice cream!
This is basically like an apple pie, only served without the top crust and much less intensive.
I used honey crisp apples but gala, fuji, and even granny smith apples would work great. You could also use a combination of apples and pears if you wanted!
Store leftovers in the fridge for up to 3 days. Best served warm although I did like it cold, too!