Line a jelly roll pan with aluminum foil & spray with Pam.
Layer saltine crackers on pan.
Melt butter; add brown sugar & mix well.
Boil together for 3 minutes.
Pour over saltines and bake at 375ºF for 5 minutes.
Remove from oven and pour chocolate chips over mixture.
When melted, spread evenly.
Sprinkle brickle over top if desired.
Allow to harden. Chilling will speed up hardening.
Break into pieces & enjoy.