Combine flour, apple sauce, butter and salt in a bowl. Kneed until you have a firm dough.
Put in a plastic bag or wrap in cling film and put in the fridge for at least 30 minutes.
In a bowl combine sliced peaches and cinnamon with corn starch or tapioca flour. Add sugar if you prefer it sweeter. For me the peaches are sweet enough on their own. Make sure the peaches are well covered.
Preheat the oven to 190 degrees Celsius.
Remove the dough from the fridge.
Divide the dough in two if making two small galettes. Place the dough on parchment paper and roll out to a thin dough.
Arrange the peaches on the rolled out dough, leaving about 2 cm on the edges.
Fold the edges of the dough in over the peaches.
Brush with almond milk.
Put on a baking sheet and bake in the oven for approximately 20-25 minutes (until the gelette is golden brown).
Remember to keet an eye on the galette so it doesnt burn.