While the almonds roast, start on the pastry dough. In a bowl, combine the flour, 1/2 cup plus 1 tablespoon butter, and salt. Rub the butter into the dry ingredients until the mixture looks like coarse breadcrumbs.
Add the egg, oil, and 1 1/2 tablespoons orange blossom water. Knead everything together until you have a smooth, pliable dough. If it feels too dry, add water, 1 teaspoon at a time, until it comes together. Form the dough into a ball, wrap it tightly in plastic, and let it rest for 30 minutes.