In a bowl add all dry ingredients - cake flour, all-purpose flour, cornstarch, baking soda & salt and set aside.
In a separate, large mixing bowl, add granulated sugar, brown sugar, maple sugar, butter & vanilla extract and then beat (with flat beater attachment if you have one) until just combined.
Add eggs to mixing bowl and beat again until just combined.
Add dry ingredients and beat on lowest setting until mostly combined then add chocolate chips and beat again on lowest setting until uniform throughout cookie dough.
Line baking tray with parchment paper and using ice cream scoop, scoop 8 balls of cookie dough onto trays, being careful to leave at least an inch between dough scoops so they don't spread into each other.
Sprinkle sea salt evenly onto dough scoops and then bake for 10 minutes & 45 seconds. For a firmer, but still soft, center bake for up to 12 minutes.
Once finished baking, remove from baking tray and transfer to cooling rack. Enjoy warm or completely cooled!
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