As a first step, prepare the Internal Pasta Reale. Boil the almonds and remove the peel. Once the almonds are cold and somewhat dry, put them in a food processor or a blender and chop them finely.
Put the chopped almonds in a bowl, add the lemon zest, a pinch of cinnamon, the sugar and the egg whites. Mix until the egg whites dilute the sugar and the mixture becomes a paste. Set aside.
Now prepare the External dough. In the bowl of a stand mixer, put all the ingredients of the external dough and mix them all very well.
The ball of dough you obtain will be rather soft, so add a little flour to help you remove it from the mixer and put is aside.
On a wooden board, take a chunk of the external dough and with a rolling pin, flatten it longways about 2 1/2" wide and 1/4" thick. Cut around the edges to make the dough straight and even on all sides.
Deposit at the center a line of the internal dough of about 1" wide and 1/2" thick. Enclose the internal dough with external dough so that it looks like a tube. Flatten the dough with your hands and with a sharp knife, cut it diagonally every 1" to get your cookies.
Put all your cookies on a baking sheet and bake them at 350F for 20 minutes.
Nonna Rita Tribuzio
Prepare the Icing:
Once all the cookies have been baked and cooled off you can put icing on them.
In a bowl, add all your icing ingredients and mix them well. The icing will be very soft.
With a brush or your finger, put some icing on each cookie and let them dry.