Creating Classic Christmas Toffee can be straightforward if you follow these easy steps:

1. Prepare Your Pan: Line a 9×13 inch baking pan with parchment paper, leaving some overhang for easy removal later.
2. Melt Butter: In a medium-sized saucepan, melt the unsalted butter on medium heat.
3. Add Sugar and Water: Once the butter is melted, stir in the granulated sugar and water.
4. Stir Constantly: Cook the mixture, stirring constantly, until it begins to boil.
5. Bring to Temperature: Allow the mixture to boil, without stirring, for about 8-10 minutes. Use a candy thermometer and aim for a temperature of 300°F (hard crack stage).
6. Add Vanilla and Salt: Once the toffee has reached the desired temperature, remove it from the heat. Quickly stir in the vanilla extract and salt.
7. Pour into Pan: Carefully pour the hot toffee mixture into your prepared baking pan, spreading it evenly.
8. Cool Slightly: Let the toffee cool for about 5 minutes before adding the chocolate chips.
9. Add Chocolate Chips: Sprinkle the chocolate chips evenly over the warm toffee. Allow them to melt for about 5 minutes.
10. Spread Chocolate: Once melted, use a spatula to spread the chocolate evenly over the surface of the toffee.
11. Sprinkle Nuts: Before the chocolate sets, sprinkle the chopped nuts over the top, pressing them gently into the chocolate layer.
12. Cool Completely: Allow the entire pan of toffee to cool completely at room temperature for at least 1 hour.
13. Break into Pieces: Once cooled, lift the toffee out of the pan using the parchment overhang. Break it into pieces to serve or store.

These simple steps will guide you in creating Classic Christmas Toffee effortlessly, allowing you to enjoy a delicious treat that embodies the spirit of the holiday season.