In a bowl, use a whisk to mix the dry ingredients: flour, salt, and baking powder, and set aside.
In the bowl of a stand mixer (a hand mixer works well too), beat together the softened butter and both sugars until smooth and slightly fluffy (not whipped). You want it to be creamy and pale.
Add egg, orange blossom water, and orange zest. Mix just until smooth.
Add dry ingredients to the butter mixture and mix gently with a silicone spatula until a soft dough forms. Texture notes: The dough should be soft and not sticky. If it is sticky, chill for 15 minutes and check the texture. If the dough is crumbly, add 1 tbsp milk.
Wrap the dough and chill it for at least 30 minutes to an hour. This makes shaping much easier and improves texture.
Heat oven to 170°C (340°F).
Line a baking sheet with parchment paper.
Divide the dough into about 20 pieces (about 20 g each). Roll into small logs (about 6–7 cm) and taper the ends slightly.
Place the cookies on the baking sheet. Cut the classic centre slit with a knife.
Optional: brush lightly with milk for a gentle shine.
Bake 14–18 minutes until they are light golden at the edges and pale on top. Do not over bake! The cookies become firm as they cool.
Let cool on a rack for 30 minutes.
Notes
Serve after cooling. They can be enjoyed on their own or, as I prefer, with fresh fruit and yogurt.