Cracker Toffee

Pam's recipe

Cover a cookie sheet with foil.
Line with saltine crackers to within 1-2 inches of edge.
Place 2 cubes butter cut up in a medium saucepan.
Add 1 cup packed brown sugar.
Cook over med-high heat until mixture is melted and smooth.
Bring to a boil.
Turn down heat to medium and boil 3 minutes (exactly).
Pour mixture over crackers.
Bake 5 minutes (exactly) on 400.
Remove from oven. Let sit for 5 minutes.
Sprinkle with 1 1/2 cup choc. chips
When melted, spread to cover sugar mixture sprinkle with nuts if desired,
and refrigerate for at least 2 hours.
Break up brittle.
Store in refrigerator.