In a bowl, whisk together the all purpose flour, coconut sugar, and salt. Cut the butter into small cubes and work it into the dry ingredients using your fingers or a pastry cutter until the butter is the size of peas.
Slowly add in the water 1 tbsp at a time to hydrate the flour. it might look a little crumbly and that's ok. Be careful not to overwork the crust because the butter will get too warm and the crust will be less flakey.
In a small bowl mix together the gelatin with the 3 tbsp water and let set for a few seconds to bloom, then quickly add into the crust mixture and work it in.
Form the dough into a ball and place in the fridge for 30 minutes. Take the dough out of the fridge and roll it out into a rectangle over parchment paper.(if the dough is too sticky, add some tapioca flour on top.)
Fold the crust towards the center on all side like an envelope. Wrap it up again and place in the fridge for 15-30 minutes.
While the dough is chilling, cut your peaches into thin slices and add to a bowl along with the honey, lemon juice, vanilla extract, and tapioca flour. Coat the peaches evenly and set aside.
Once the crust is chilled, take it out of the fridge and roll into a about a 13-14'' round size circle on a floured piece of parchment paper. Add a thin layer of tapioca flour in the center of the crust.
Add the peaches to the center on the crust leaving about 2 inches of the outer crust. You can either place them in a pretty formation or just place them randomly in an even layer.
Carefully fold over the crust and patch up any large cracks to prevent the juices from leaking out while baking.
Brush the pie crust with the coconut milk and add the granulated monk fruit or coconut sugar on top. Place the galette onto a baking sheet with the parchment paper.
Heat your over to 400 degrees and bake on the lower rack for 20 minutes then switch the middle/upper rack for 25-30 minutes. The galette will be done when the crust gets golden brown and the peach juices start to bubble.
Once the galette is done, let it cool down for a few minutes. Slice it into pieces then top with some vanilla ice cream and a honey drizzle then enjoy!