Line bottom and sides of a 9"x 13" baking pan with aluminum foil, leaving an overhang on two short sides.
Grease foil.
Pulse flour, sugar, butter and cocoa in a food processor 5 to 6 times or until mixture resembles coarse meal. Press mixture on bottom and 3/4" up sides of prepared pan.
Bake crust at 350° for 15 minutes. Remove from oven, and sprinkle chocolate morsels over crust. Cool about 30 minutes.
Whisk together brown sugar, corn syrup, butter and eggs until smooth. Stir in coconut and toasted pecans, and spoon into crust. OPTION: add 1/4 cup bourbon
Bake at 350° for 25 to 30 minutes or until golden and set.