• Preheat the oven to 355°F (180°C).
• In a large bowl, mix ground almonds, powdered sugar, cinnamon, and salt. Add water and lemon juice and mix into a slightly sticky dough using a stand mixer or hand mixer.
• Transfer the dough on a well-floured surface and roll out to about 0.4 inches (1 cm) thickness using a rolling pin. → If the dough is too sticky, work in a bit more flour.
• Cut out stars using star-shaped cookie cutters, then transfer on a with parchment paper lined baking sheet. → Knead together dough scraps, roll and cut out again. Repeat until you have no dough left.
• Bake for about 8 minutes in a preheated oven. → They're done once the tips start to turn brownish.
• Bake for 8 minutes in the preheated oven. They are good as soon as the tips start to turn brownish.
• Remove from the oven, let them sit on the baking sheet for 5 minutes, then transfer to a rack to cool.

Icing

• Mix powdered sugar, lemon juice, and water in a small bowl.
• Glaze each cookie with the icing, then let the icing dry for at least an hour before storing.