In a small pot, melt your butter over medium heat. Stir constantly with a wooden spoon to prevent the butter from browning. When the butter starts to bubble start swirling the pot constantly until the butter changes color into a deep brown and a nutty aroma fills the room. Take the butter off the heat and let it cool.
In a bowl combine the sugars, eggs, vanilla and your cooled brown butter.
Add your dry ingredients (flour, salt and baking soda) to the wet mixture. Mix with a spatula until combined.
Add your chocolate chunks and fold into the dough until mixed.
Using a cookie scoop, portion your dough onto a lined sheet tray. Place the cookies into the fridge for 2 hours (or overnight) to firm up.
Preheat your oven to 350°F and line a baking tray with parchment paper. Place your cookies with some space as they will spread out. Bake for 10-12 minutes until the edges of the cookies are golden brown.
When they are hot out of the oven you can press some large chunks of chocolate onto the cookie to create delicious chocolate puddles. Let cookies cool and enjoy!