Step 1

Preheat the oven to 350°F and line a baking sheet with parchment paper. Set aside.

Step 2

Brown the butter over medium heat, stirring constantly until the butter begins to foam and turns a golden brown, emitting a nutty aroma. Take butter off the heat and allow to cool.

Step 3

In a small mixing bowl combine the butter and the sugars and mix well. Add the egg yolk, and vanilla extract and mix until smooth and homogenous.

Step 4

Add the flour, salt and baking soda. Mix until just combined and no streaks of flour remain. Last, fold in the chocolate. Do not over mix.

Step 5

Shape into 2 huge cookies or 2 medium size cookies and place on your prepared cookie sheet.

Step 6

Bake for 11 minutes*, or until the edges are just golden brown and the centers have puffed up but are still gooey.

Step 7

Allow to cool before eating!