Preheat oven to 350 degrees F.
Into a large mixing bowl, add flour, brown sugar, white sugar, cornstarch, baking soda, and salt. Whisk together to combine.
Add vegetable oil, applesauce, and vanilla bean paste. Stir until ingredients are well combined and mixture forms a thick dough.
Fold in chocolate chips and stir gently to distribute throughout the dough.
Onto a baking sheet lined with parchment paper, spoon the dough into portions approximately 1 heaping tablespoon in size. Place on the baking sheet allowing 2-3 inches of space between each.
Bake 10-12 minutes, until edges are just beginning to brown. Remove from the oven and immediately sprinkle lightly with additional sea salt.
Allow cookies to rest on the baking sheet for at least 15-20 minutes. Do not skip this step! The cookies will appear very soft when they come out of the oven. This is normal. It is during this time of rest on the baking sheet that the dough will fully set and then they're ready to eat!