Mix: Preheat the oven to 340°F (170°C) and line a baking sheet with parchment paper.Add 3 cups almond flour, ⅔ cup powdered sugar, the zest of 2 medium lemons, 1½ tablespoons lemon juice, and 1 large egg white to a bowl.Stir, then gently squeeze and knead with your hand until the mixture comes together into a dough. If too dry, add a little more egg white.
Shape: Add 3 tablespoons powdered sugar to a plate.Shape the dough into 15 balls, about 1 ounce (28 g) each, then roll them in the powdered sugar.
Press: Arrange the cookies on the prepared baking sheet. Gently press 1 whole almond into the center of each cookie, flattening it slightly and creating a few cracks around the edges.
Bake: Bake at 340°F (170°C) for 12 minutes, until the cookies are pale and still soft.Let cool on the baking sheet to set.
Substitutions
Almond flour → Finely ground blanched almonds.
Powdered sugar → Confectioners’ sugar.
Egg white → No tested substitute.
Lemons → Meyer lemons.
Whole almonds → Blanched almonds, sliced almonds, or omit.
Tips
Don’t overbake: Take them out after 12 minutes, while pale and soft.
Work the dough: Gently squeeze and knead until soft.
Weigh the cookies: Aim for 1 ounce (28 g) each for even baking.
Coat generously: Powdered sugar creates the pretty crackled finish.
Shape before baking: The cookies won’t spread much in the oven.
Cool on the pan: They firm up as they cool while staying tender inside.
Store airtight: Keep completely cooled cookies in an airtight container to help them stay soft.