This were more complicated than most, but SO worth it. The browned butter created such a caramel-y flavor and the sourdough helped with the gooey-ness. Highly recommend! Recipe: 113g butter, browned 185g brown sugar 60g white sugar 100g sourdough discard (mine was slightly active - fed yesterday) 1 egg yolk 4g vanilla extract 175 all purpose flour 3g baking soda 3g baking powder 175g chocolate chips (I did half semi-sweet and milk chocolate) Flaky sea salt, optional