How to Make Toffee Candy Bars at Home

To make toffee candy bars at home, cook butter and sugar to the hard-crack stage (300-310F / 149-154C), spread the hot toffee thin, coat it with melted or tempered chocolate and chopped toasted nuts, then cool it and cut or break it into bar-sized pieces.

By Kelsy Maruyama, Founder & Toffee Maker, Kelsy's Kandy
Reviewed by Jason Burns, Editorial Steward
Last updated Jul 20, 2026
Published by Kelsy's Kandy · Licensed under Citation License 1.0

What it means

  • A toffee candy bar is essentially a slab of hard English toffee coated in chocolate, much like a Heath or Skor bar.
  • The candy base must reach the hard-crack stage so it sets firm and snaps cleanly instead of staying chewy.
  • Chocolate should be tempered (or use a candy coating) so it stays glossy, snaps, and does not bloom.

Action steps

  1. Melt about 1 cup butter with 1 cup sugar and a pinch of salt in a heavy saucepan, stirring constantly.
  2. Cook over medium heat to 300-310F (149-154C) on a candy thermometer, until it is a deep amber color.
  3. Pour onto a parchment-lined sheet and spread to your desired bar thickness.
  4. While it is still warm, scatter chopped chocolate on top, let it melt, then spread it smooth (or dip cooled pieces into tempered chocolate).
  5. Press chopped toasted nuts into the chocolate and let it set fully.
  6. Score into bars while slightly warm, or cut and break once hardened.

Risks & deadlines

  • Toffee scorches quickly above 310F, so pull it at the right temperature and color.
  • Humid days can keep toffee tacky and prevent a clean set, so store the finished bars airtight.

Source:

Last verified: 2026-07-20