Step 1

Preheat oven to 350°F and line a large baking sheet with a silicone liner or parchment paper.

Step 2

In a medium bowl, whisk together flour, cornstarch, baking soda, and salt. Set aside

Step 3

In a large bowl, whisk melted butter or shortening with brown sugar until mixture is combined. Add egg, then vanilla, and whisk again until smooth and fluffy.

Step 4

Fold in dry ingredients gradually until dough comes together and is well combined. Fold in chocolate chips.

Step 5

Use a small cookie scoop to place scoops of dough onto prepared baking sheet at least 2 inches apart.

Step 6

Bake in preheated oven 10 minutes, or until tops of cookies are set and edges are golden brown. For soft cookies, be sure not to overbake.

Step 7

Sprinkle with flaky sea salt, if desired. Let cool on baking sheet for 10 minutes, then transfer to a wire rack to cool completely.