I used the recipe below but may have cut the sugar a bit too much (to 2/3 cup), For the next bake, increasing to 3/4 cup might improve the fudgy texture, create a better sugar crust, and probably enhance the earl grey flavor more as well.

Recipe: adapted from https://eatchofood.com/blog/2018/2/19/oolong-tea-blondies, with earl grey tea leaves as a substitution and without pistachios