The best replacement for toffee is caramel.

The best alternatives to toffee are rated as following:
★★★★★  caramel
★★★★  brittle
★★  taffy
★★  english toffee
★  butterscotch
★  butter toffee
  peanut brittle
  carmel
  praline
  fudge

Your alternative for toffee is not listed? Suggest!
Speaking about toffee, one probably shouldn't forget about saltines.

Other search terms related to toffee and their ratings are:
★★★★★ saltines
★★ saltine crackers
★★ club crackers
★ graham crackers
You have in mind a companion for toffee and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of toffee in all years. Click on graph for more.
toffee
caramel
brittle