In a large bowl, combine melted and cooled butter both sugars
Add eggs, one at a time and stir between each addition
add Vanilla and maple syrup and stir
In a separate bowl, whisk dry ingredients : flour, cornstarch, baking powder, baking soda and salt
Gradually add the dry ingredients to the wet, stirring until combined then add the chocolate chips, mix them in.
cover the bowl and let the dough chill in the refrigerator for 15-20 minutes
Preheat your oven ( 350℉) while the dough is chilling, prepare your pans with parchment paper (my prefered method). If you don't have parchment then bake cookies directly on an ungreased cookie sheet.
Scoop out cookie dough (about 2 Tbsp) and roll into balls, flatten slightly ( i find this very important if you want a flatter - not domed cookie). Return unused cookie dough to the refrigerator while each batch cooks.
Once oven is at temperature, bake cookies for about 13 minutes, until the edges are starting to turn golden brown.
Remove from oven and let cookies cool completely on the cookie sheet
Once cookies are cool remove to an airtight container or plate, bake next batch making sure the sheet pan is not hot and the dough is cold
Enjoy!