Adapted from Sunset Magazine
Preheat oven to 325°F.
Place cookies in a 1-quart zip-lock plastic bag and seal. With a rolling pin, crush cookies into fine crumbs. Pour 2 cups of the crumbs into a bowl and mix with melted butter, sugar, and espresso powder. Press mixture evenly into bottom and up sides of a 10-inch tart pan with removable rim.
Place tart pan on a 12- by 16-inch rimmed baking pan and set on center rack of preheated oven. Pour filling into chocolate crust.