Preheat the oven to 375. Line two baking sheets with parchment paper.
Mix butter and sugar with an electric mixer until light and fluffy.
Next, add the eggs and vanilla. Mix until smooth.
Add the flour, cornstarch, baking soda, and salt. Mix just until incorporated.
Mix in the chocolate chips just until evenly distributed.
Drop balls of dough onto the prepared pans using a medium cookie scoop.
Bake for 10-12 minutes or until lightly browned around the edges. Transfer to a wire rack to cool.
Notes
Self-Rising Flour - You can substitute 2 ¼ cups all-purpose flour combined with 1 tablespoon baking powder and ½ teaspoon salt for the self-rising flour.