Melt down butter in a pot and heat until browned.
Pour the brown butter into a measuring glass and add the miso paste. Whisk to combine and set aside.
Whisk together dry ingredients flour, baking soda, and salt and set aside.
In a large mixing bowl, add the sugar, dark brown sugar, and cooled miso brown butter. Whisk to combine.
Add in the egg and vanilla and whisk it.
Pour in the dry ingredients and fold the two together. Add in the chopped chocolate and fold to fully combine.
Add the sesame seeds to a small dish. Then press the tops of the cookie dough balls into the sesame seeds so they cover the very tops of each cookie.
Place cookies on the baking sheet spaced a few inches apart.
Bake in preheated oven 180 celsius (top and bottom heat) for 10 min
