The Best Toffee Recipe

Line a baking sheet with parchment paper or a silicone mat and set it aside.

In a heavy saucepan, combine the butter, granulated sugar, brown sugar, corn syrup, and water.

Cook the mixture over medium heat, stirring constantly, until it reaches 300°F (hard crack stage) on a candy thermometer.

Carefully pour the hot toffee onto the prepared baking sheet and spread it evenly.

Immediately sprinkle chocolate chips over the hot toffee and let them sit for a couple of minutes to soften.

Spread the melted chocolate into a smooth layer.

If using, sprinkle chopped nuts over the chocolate while it’s still soft.

Let the toffee cool completely at room temperature until hardened.

Break the toffee into pieces and serve or store.