15 whole graham cracker sheets 1/2 cup sweetened coconut flakes 2 tablespoons brown sugar 1/2 cup (1 stick) butter 2 bars cream cheese 1 cup powdered sugar 1 teaspoon coconut extract 8 ounces Cool Whip 2 boxes instant coconut cream pudding mix 3 cups half and half 8 ounces Cool Whip 1/2 cup toasted coconut