Heat oven to 360F and line a baking sheet with parchment paper or a Silphat baking liner.

In the bowl of an electric mixer fitted with a paddle attachment, combine the butter and sugars and mix for 5 minutes or until light and fluffy.

Add egg, and vanilla, and mix until fully incorporated, be sure to scrape the sides and the bottom of the bowl once or twice.

Beat in the salt and baking soda until combined, then add the flour and mix on low until just mixed.

Stir in the chocolate chunks and both kinds of chocolate chips.

Scoop cookies onto baking sheet and sprinkle with a little salt. Bake for 11-12 minutes until golden on the outside, but still gooey on the inside. Let rest on baking shed for 5 minutes and then cool on wire rack.