Dark Treacle Bonfire Toffee Recipe
Always Remember the Fifth of November. Ah, Bonfire Night — the annual reminder of Guy Fawkes and the Gunpowder Plot. But let’s be honest, who really got excited about the history lesson? For me, it was all about one thing — my mum’s homemade Bonfire Night treacle toffee.
I can still picture it: walking up the big hill to the footy club, gloves on, breath fogging the air, and a pocket full of sticky, jagged shards of toffee ready to share (or not). Okay, maybe not the walking bit — but that toffee? That was pure magic. Of course this was slightly before I exchanged chewing toffee for swigging cheap cider with my pals in the footy stand, but I digress…
And the secret ingredient? The unmistakable Lyle’s Black Treacle — that golden tin with the roaring lion, a true British classic that’s been in our cupboards for generations. I finally got my hands on Mum’s recipe, and today I’m sharing it — just in time to fill your pockets before you head out to the fireworks. Hold on to your veneers — this is proper Bonfire Night toffee!
Dark Treacle Bonfire Toffee Recipe
Makes: About 40–50 bite-size pieces
Prep time: 10 minutes
Cook time: 20 minutes
Cooling time: 30–40 minutes
Ingredients
- 450g Lyle’s Black Treacle (the star of the show!)
- 450g white granulated sugar (standard table sugar, not brown or caster)
- 115g unsalted butter
- 100ml cold water
- 1 tbsp white vinegar
Method
- Prepare your tin:
Grease a deep baking tray or line it with non-stick baking paper. (Once it sets, this toffee is tough stuff — so make sure you line it well!) - Melt it down:
In a large, heavy-bottomed pan, combine the sugar, water, butter, vinegar, and that glorious Lyle’s Black Treacle. Stir gently over low heat until the sugar dissolves and the butter melts. - Bring on the boil:
Increase the heat and let the mixture bubble away. You’re aiming for the hard crack stage — about 146–154°C on a sugar thermometer. If you don’t have one, drop a little mixture into cold water — it should harden instantly and snap when bent. - Pour and set:
Once it hits the right temperature, immediately pour the molten toffee into your prepared tray. Don’t touch it — it’s dangerously hot. - Smash time:
Let it cool completely, then tap the tray with a rolling pin to break it into shards. - Wrap and stash:
Wrap the pieces in baking parchment or cellophane, or store them in an airtight tin. Perfect for pockets, bonfires, and a good dose of nostalgia.
A Note on Tradition
It wouldn’t be Bonfire Night without that familiar tin of Lyle’s Black Treacle — a British baking staple since 1881. Its deep, smoky sweetness gives this toffee that unmistakable dark, bitter edge that pairs perfectly with cold November air and the smell of fireworks.
Words – Joanne Brook-Smith