Place butter in a small sauce pan and heat on medium low until melted. Then, continue to heat until there are no more bubbles coming up and the whistling has reduced (about 5 minutes), by then you should smell the nutty aromas. Pass your brown butter through the sift. Set aside to cool down.
4 oz butter
In a mixing bowl, whack the all-purpose flour, together with the baking soda and sea salt. Set aside.
6.70 oz all-purpose flour, 1/2 tsp baking soda, 1/4 tsp sea salt
To another mixing bowl, add the granulated sugar and light brown sugar. Pour the warm brown butter and whisk until you get a thick paste, about 1-2 minutes.
2.65 oz light brown sugar, 2.46 oz granulated sugar
Add the egg and vanilla extract. Mix until combined.
1 egg, 1 1/2 tsp vanilla extract
Fold in the dry ingredients until just combined.
Fold the mini chocolate chips until no dry spots remain. NOTE: Do not over mix.
3.17 oz dark chocolate chips
Using a 1½-Tablespoon cookie scoop, scoop out the cookie dough and place them on your prepared baking sheet.