Here is a shortcrust pastry recipe with buckwheat and almond flour , perfect for sweet tarts.
You can prepare this dough in your food processor. Otherwise you can prepare it manually.
Mixing the dry ingredients: In a large bowl, combine the flours, sugar and pinch of salt. Be sure to sift the icing sugar well to avoid lumps.
Roll out and bake the dough: Preheat your oven to 180°C (thermostat 6). Take the dough out of the refrigerator and roll it out on a lightly floured work surface (with gluten-free flour). For my part, I spread it between two stretchable cling films. Then place it in a tart mold or cut out circles for tartlets. Prick the bottom of the tart with a fork to prevent it from swelling during cooking (this is optional if you bake the tart directly with the filling).
If you do not cook the dough with the filling, blind cook it. Blind cooking: Cover the dough with baking paper and baking balls (or dried beans). Cook the dough blind for about 15 minutes. Then remove the paper and balls and cook for another 5 to 10 minutes until the dough is golden brown.