Pre-heat oven to 340°F (170° celsius). Line a large cookie sheet with parchment paper.
If making your own from whole almonds, in a food processor add the cooled almonds and sugar and pulse for 20 seconds until very fine. Then add egg white (or whites) and almond flavouring again pulse for 30 seconds until mixture comes together.
If using ground almonds then in the food processor add the ground almonds, sugar, flavouring and egg white and combine.
Roll the dough into small balls (or if using 2 egg whites drop by spoonfuls) and place them about an inch apart on the prepared cookie sheet, sprinkle with a little granulated sugar if desired. Bake for approximately 17 -23 minutes or until golden*. Let cool completely, sprinkle with icing sugar before serving if desired. Enjoy!
*Depending on how baked you like them, my kids prefer them on the lighter side (17 minutes and my husband the more traditional Italian cookie about 23 minutes).
Notes
If making your own ground almonds, place the almonds in a single layer on a baking sheet and bake for 10 minutes in a pre-heated 350°F (180°C) oven. With a metal spatula mix a couple of times while in the oven, immediately move to a clean bowl and let cool 20 minutes before grinding. Grind the cooled almonds with the sugar.