In a medium bowl, sift together all-purpose flour, bread flour, salt, and baking soda.
In a saucepan, brown the unsalted butter and let it cool to room temperature.
In a large bowl, cream together the cooled brown butter, white sugar, dark brown sugar, vanilla extract, and espresso powder.
Add the egg and egg yolk to the mixture and beat until well combined.
Gradually add the flour mixture to the wet ingredients, mixing until just combined.
Fold in the chocolate chips and dark chocolate chunks.
Scoop the dough onto a baking sheet and chill in the fridge overnight for best results, or bake immediately.
Bake for 10-12 minutes or until golden brown.
Let the cookies cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely. Enjoy!
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