It is possible that they used a nut-free extract in their syrup ... this post for ingredient amounts and full recipe ...

Saltine Cracker Toffee, or “Christmas crack,” is a classic holiday dessert perfect for Christmas cookie gift exchanges! This Christmas crack recipe takes less than 30 minutes to prepare and ...

Store toffee in an airtight container in the fridge for 1-2 weeks. Separate layers of toffee with sheets of waxed paper to prevent them from sticking to each other. The basic toffee recipe ...

If you don't have a sugar thermometer, the recipe will still work ... dairy-free dark chocolate to make it dairy-free and vegan. Store the cinder toffee in an air-tight tin for up to a week.