Amaretti (Spumetti) from Pescara, Italy:
500g almonds (toast whole almonds in 400 degree oven, turning and tasting them, and then chop)
4 egg whites - beat and then add:
450g icing sugar
1 tbsp almond extract
1 cup flour mixed with 1 tsp baking powder
chill mixture for 10 mins.
drop spoonfuls into pan
bake at 325 degrees for 10 minutes
They will be crunchy!
Unfortunately, I don't know how to make amaretti di Saronna, and I, too, love them. I often buy them (bought them today, in fact) at Marshalls stores, surprising as that may sound. They are usually in the housewares area with the olive oils, coffee beans, etc. I also check there for quality pots and pans - they often have great deals on All-Clad.