Milk chocolate chip cookies with sea salt

I am always on the look out for the best chocolate chip cookies recipe. I have tried my fair share, some more successfull
than others. These ones are the best cookies so far, specially when I used milk chocolate instead of semi sweet.
If you don`t like your cookies too sweet, use dark chocolate istead.

Milk chocolate chip cookies with sea salt
14 cookies
1 stick (115g) butter, softened
1/2 cup (125ml)granulated sugar
1/2 cup (125ml) brown sugar
1 egg
1 tsp vanilla extract
1 1/2 (375ml)cups all purpose flour
1 tsp cornstarch
3/4 tsp baking soda
1/4 tsp salt
3.5 oz (100g) milk chocolate chips
A pinch of sea salt flakes

Whisk together flour, cornstarch, bakingsoda and salt in a baking bowl.
In another bowl, cream sugar and butter until light and fluffy with a hand mixer or in a kitchenaid 
with paddle attatchement. Add egg and vannilla extract.
Add the dry ingredients into the butter and sugar mixture on low speed until just incorporated.
Stir in the chocolate chips by hand.
Scoop the dough into about 14 cookies using an ice cream scoop or 2 tablespoons and place them on a large plate.
Cover with platic wrap and chill in the fridge for 1 hour. The chilling will prevent them from speading out too much.
Preheat oven to 350 degrees. Cover 2 baking sheets with parcement paper.
Place the cookies on the bakingsheets and sprinkle on the sea salt flakes
Bake for 13-14 minutes. The cookies will seem underbaked but will firm up and get delicious when cooling down.
Let them sit on the baking sheet for a 5 minutes before you transfer them to a cooling rac