Creating a Fresh Peach Galette can be straightforward if you follow these simple steps:

1. Prepare the Dough: In a mixing bowl, combine the flour, sugar, and salt. Add the chilled butter and mix until the mixture resembles coarse crumbs.
2. Add Ice Water: Gradually add ice water, one tablespoon at a time, mixing until the dough comes together. Shape it into a disk, wrap it in plastic wrap, and refrigerate for at least 30 minutes.
3. Preheat Oven: Preheat your oven to 400°F (200°C) while the dough chills.
4. Prepare the Filling: In a large bowl, combine the sliced peaches, sugar, cornstarch, vanilla extract, lemon juice, cinnamon, and nutmeg. Toss gently to coat the peaches evenly.
5. Roll Out the Dough: On a floured surface, roll out the chilled dough into a 12-inch circle. Transfer it to a parchment-lined baking sheet.
6. Add the Filling: Spoon the peach mixture into the center of the dough, leaving a 2-inch border around the edges.
7. Fold the Edges: Gently fold the edges of the dough over the filling, pleating it as you go to create a rustic look.
8. Brush with Egg Wash: Brush the crust with the beaten egg and sprinkle extra sugar over the top for a sweet finish.
9. Bake: Place the galette in the preheated oven and bake for 35-40 minutes, or until the crust is golden brown and the peaches are bubbly.
10. Cool: Remove from the oven and allow the galette to cool for 10-15 minutes before slicing.

These steps will guide you in creating this incredible Fresh Peach Galette effortlessly.