Cut 1 stick (1/2 cup) salted butter into cubes. Heat in a saucepan over medium heat. Stir continuously the entire time. Remove from heat once the butter has reached a golden brown color. (takes about 4-5 minutes). Cool in the refrigerator until brown butter reaches a spreadable consistency. Measure out a 1/4 cup for the cookie recipe.

Preheat oven to 350°F

Position oven rack to the center.

Combine dry ingredients: flour, cornstarch, baking soda and salt. Set aside.

In separate bowl; cream together brown butter, salted butter, brown sugar and white sugar. Mix on medium for 3 minutes, scraping sides of bowl as necessary.

Add egg and vanilla. Mix until incorporated.

Gradually add the dry ingredients while mixing. Cookie dough will be thick.

Mix in the chocolate chips.

Refrigerate dough for 1 hour to firm up. (optional)

Drop dough in rounded tablespoons on baking sheet.

Bake 9-11 minutes.

Transfer to cooling rack.