In a medium bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
½ cup unsalted butter, ⅓ cup granulated sugar, ¼ cup brown sugar
Mix in the lemon zest, lemon juice, and vanilla extract until well combined.
zest of two lemons, 3 tablespoons fresh lemon juice, ½ teaspoon vanilla extract
Add the cooled-down heat-treated flour and salt to the wet ingredients, mixing until combined. The dough may be crumbly at first. Add in ½ tablespoon lemon juice at a time until the dough is soft just like regular cookie dough.
¼ teaspoon salt
Gently fold in the chocolate chunks if using until evenly distributed.
1 cup white chocolate chips
Enjoy the edible lemon cookie dough immediately, or store it in an airtight container in the refrigerator for up to a week.