1/4 cup fresh lemon juice (about 3-4 lemons depending on the size)
2 heaping Tbsps lemon zest (about 2 lemons)
1/2 tsp pure almond extract
2/3 cup confectioners’ sugar – for dusting
In a medium-size bowl, sift together the flour, cornstarch, and salt; Set aside.
In a large bowl, beat the butter and sugar together until pale and creamy with a hand mixer. Add the lemon juice, lemon zest, and almond extract and beat on medium-low speed until combined. Add the flour/cornstarch mixture and beat on low speed until a smooth dough forms.
Turn the dough out onto a lightly floured surface and divide in half. Place each half onto a large sheet of wax paper and roll each one into an 8-inch long log. Wrap each log in plastic wrap and refrigerate for 2-24 hours.
Preheat the oven to 350 F after the dough is finished chilling. Line a cookie sheet with parchment paper.
Remove one log of dough from the refrigerator and slice it into 1cm-thick rounds. Place the cookie rounds onto prepared sheets, leaving about 1 1/2-inches of space between each one. Bake for 15-17 minutes, until the bottom edges are light golden brown. Remove the sheet from the oven and allow the cookies to cool for about three minutes.
Place the confectioners’ sugar into a large, shallow bowl. Gently toss the still-warm cookies through the bowl of confectioners’ sugar. Transfer the coated cookies to a wire rack and cool completely. Repeat with the remaining log of dough. Store in an airtight container.