Preheat oven to 350 degrees and line two cookie sheets with parchment paper
Using a large bowl, beat together the flour, baking soda, cornstarch, and salt
Using a standing mixer, beat the butter, cream cheese, and sugar until combined and fluffy
Beat in the eggs one at a time until combined
Beat in the lemon zest and lemon juice until combined
Gradually beat in the dry ingredients until a soft dough forms
Pour the 1 C powdered sugar into a medium bowl
Using a sppon or small ice cream scooper, scoop a small amount of dough into the powdered sugar and coat it by rolling it around
Place the dough onto the cookie sheets
Repeat steps with remaining dough
Bake the cookie sheets, 1 at a time, for 11-13 minutes or until a light golden color around the edges
Allow to cool before enjoying!