Cream the softened unsalted butter, granulated sugar, and light brown sugar until light and fluffy, about 2-3 minutes.
Add the eggs one at a time, mixing well after each addition, then stir in the vanilla extract.
In a separate bowl, whisk together the flour, cornstarch, baking powder, baking soda, cinnamon, and salt.
Gradually mix the dry ingredients into the wet mixture until just combined.
Cover the dough and refrigerate for at least 30 minutes.
Preheat your oven to 350°F (175°C) and line baking sheets with parchment paper.
Scoop the chilled dough onto the baking sheets, spacing them 2 inches apart, and bake for 10-12 minutes.
Prepare the frosting by beating the softened butter, confectioners' sugar, honey, and milk until smooth.
Frost the cooled cookies with a generous layer of honey frosting.
Serve fresh or share with friends and family!