Prepare jelly roll pan by either greasing/spraying it or lining it with parchment paper. (I use the parchment paper for easy/no clean up.)
Spread graham crackers over the pan; whole or broken it doesn't matter.
Bring butter and sugar to boil in saucepan over medium heat until it thickens a little. Pour the mixture over the graham crackers and bake in oven for 10 minutes.
Spread chocolate chips and toffee pieces over the baked crackers and let cool. Refrigerate for 1 hour.