From Southern Living -- I have not made this yet, but I went looking for deserts for a dinner I am having at my house and this is what I decided on! The nice benefit is it is made with lightened items! Cook time is time for freezing.
Place pecans in a single layer on a baking sheet coated with cooking spray; sprinkle evenly with sugar.
Bake at 350° for 8 to 10 minutes or until lightly toasted. Cool.
Stir together ice cream, 3/4 cup cookie chunks, and 1/3 cup pecans; spoon into piecrust. Freeze 10 minutes. Press remaining cookie chunks and pecans evenly on top. Cover with plastic wrap, and freeze 8 hours. Drizzle individual slices evenly with chocolate syrup.