Place cookie crumbs, powdered sugar and ground pecans in a large bowl and stir to combine.
Melt the chocolate in the microwave (30 second increments at 50% power, stirring after each, until completely melted and smooth). Stir in the bourbon and corn syrup. Add the chocolate mixture to the dry mixture and stir well to combine. Let sit for 30 minutes. Place some granulated sugar in a small bowl and set aside.
Roll the mixture between your palms into 1-inch balls (I used my small cookie scoop), then roll in the granulated sugar to coat. Place the balls in an airtight container, separating layers with aluminum foil or wax paper, and allow flavors to develop by sitting at room temperature overnight. Place in small paper cups to serve, if desired.