Can I make these ahead of time?
Yes. Store in an airtight container at room temperature for up to 5 days, or refrigerate for up to 2 weeks. They can also be frozen for up to 3 months.
What can I use instead of pecans?
Chopped almonds, walnuts, or even crushed toffee bits work well. You can also omit the nuts entirely if you prefer.
How do I know when the toffee is done cooking?
The butter and sugar mixture should reach a light golden brown color and smell nutty, usually 5–7 minutes of constant stirring. Use a candy thermometer if you have one—aim for 300–310°F (hard-crack stage).
Can I use salted butter instead of unsalted?
Yes, but reduce the recipe's salt if you add any separately. Salted butter will work fine and add a slight salty-sweet contrast.
Why is my toffee grainy or not setting?
Grainy toffee usually means the mixture was stirred too much or cooled too slowly. Avoid stirring once boiling; pour immediately onto the crackers and let cool at room temperature undisturbed.