Preheat the oven to 350F degrees and line 2 cookie sheets with parchment paper
In a medium bowl, whisk together the flour, cornstarch, baking soda and salt.
In a separate large bowl, beat together the butter and 1 ¼ cup sugar until fluffy.
Beat in the egg, egg yolk, vanilla extract and almond extract.
With the mixer on low speed, beat the flour mixture into the butter mixture about ½ at a time.
Pour the ⅓ cup sugar onto a plate.
Form the dough into balls about 1 tablespoon in size. Then roll each ball in the sugar and place 2 inches apart on the lined cookie sheet.
Bake the cookies 1 sheet at a time on the middle rack of the oven for 8-10 minutes, or until the tops look just set.
Cool the cookies on the lined sheet for at least 10 minutes, then transfer to a wire rack to continue cooling
