Preheat oven to 350F: Prep baking sheet with parchment paper and baking spray.
Whisk egg whites: In a large bowl, whisk the egg whites and the salt until soft peaks form. You could use an electric mixer, a hand whisk or a fork. Set aside the egg whites.
Cut almond paste into chunks: Use a sharp knife to cut the polenta into chunks. If you have a food processor, place in the bowl with the sugar and almond extract. If you have a stand mixer, place in the bowl and use a paddle attachment. Pulse in the food processor until it looks like wet sand.
Bread up the almond paste with the sugar: If you have a food processor, place in the bowl with the sugar and almond extract. If you have a stand mixer, place in the bowl and use a paddle attachment. Pulse in the food processor until it looks like wet sand.
Add flour: Pulse the flour into the almond mixture a few times to combine. If using a mixer, add the flour and combine with the almond paste.
Combine egg whites: Add the almond mixture to a mixing bowl. Begin to add some of the whipped egg whites in portions, stirring with a wooden spoon or spatula after each addition. The dough will be slightly sticky, soft, and should not feel too wet. If it seems too wet and sticky, add a little bit more flour and stir to combine.
Roll out cookie balls: Place the pine nuts in a casserole or a bowl. Using a tablespoon, a spoon, or a small scoop, take out portions of the dough and use your hands to form the dough into 1-inch balls. You'll be rolling them like meatballs, so your hands need to be clean without any sticky dough on them. Wipe off your hands after rolling each cookie ball and slightly wet your hands to make it easier.
Roll in the pine nuts: Start to roll the cookie balls in the pine nuts, coating the top bottom and sides. Place the cookie balls on your prepped baking sheet 2 inches apart.
Bake: Place the tray in your heated oven and set the timer for 15 minutes. It could take 15-18 minutes to bake. Bake until the pine nuts are lightly golden brown, and the cookie pale and soft in the center. Do not overbake and make sure you do not brown the pine nuts. The cookies at 15 minutes should be soft and chewy. Every oven is different, and you may need to bake another 2-3 minutes. They will continue to firm up as they cool down.
Transfer to wire rack: If you have a wire rack, when they're cool enough to touch, transfer to a wire rack to cool completely.
Dust with confectioner's sugar (optional)before serving. ENJOY!