In a medium bowl, mix flours, earl grey tea, and salt together. In a stand mixer or separate bowl, cream butter and sugar together. Add extract and mix well. Add flour mixture and mix until well incorporated.
Press dough into a lightly greased 9" round baking pan until evenly spread out. Wrap well and chill in refrigerator for at least 1 hour.
Preheat oven to 325°F and bake for 24-26 minutes. You will know they are done when the edges of the cookie are light brown and when you tilt the pan the middle does not start sliding immediately.
Let cool in the pan on a cooling rack for 5-10 minutes, then gently flip upside down to remove from pan, gently tapping on the bottom if necessary. Flip right side up and transfer to baking rack to continue to cool. Enjoy!
Notes
If the earl grey tea you are using is coarse, I would recommend using a coffee grinder or food processor to get a finer texture. This will make a more appealing cookie and allow the flavor of the tea to be more evenly distributed in the dough.Don't have cake flour on hand? No worries, it's super easy to make! Use 1/2 cup minus 1 tbsp all purpose flour and add 1 tbsp cornstarch, mixing well.