In a large bowl, combine the almond flour, salt, and rosemary or scallions. In a medium bowl, whisk together the grapeseed oil and water. Stir the wet ingredients into the almond flour mixture until thoroughly combined. Press the dough into a 9-inch tart pan.
Bake for 15 to 20 minutes, until golden brown. Remove from the oven and let cool completely before filling.