Get all your ingredients together and double check you have it all.
In a clean mixing bowl add the flour, cornstarch, baking soda, salt, and cardamom. Whisk together until combined.
In another bowl or the bowl of a stand mixer, add both sugars, butter, egg, and vanilla. Whisk or beat until incorporated and slightly fluffy.
Add the dry ingredients to the wet ones and continue whisking or beating until incorporated.
Cover the dough with plastic wrap and put in the fridge for at least an hour.
When you are ready to bake, preheat the oven to 350F. Prep a baking sheet by lining it with parchment paper.
Use a small bowl to mix together the topping ingredients: ¼ cup of sugar and a generous pinch of cardamom.
Use a cookie scooper or large spoon to scoop the dough into balls (you can also use your hands if you don’t have a cookie scooper). Dunk the dough balls in the topping mix, coating the surface, then place them on the baking sheet, leaving space between each cookie. Bake for about 10 minutes, or until they only slightly darken in color. Try not to overbake these, as they are best soft.
When done, remove from the oven and allow to cool on the baking tray for a few minutes before transferring to a wire rack. Allow to cool completely before storing or enjoy warm with a glass of milk.