Creating delicious Christmas Fudge is a simple process. Just follow these steps:

1. Prepare the Pan: Line an 8-inch square baking dish with parchment paper, leaving some overhang for easy removal.
2. Combine Ingredients: In a medium saucepan, combine the semi-sweet chocolate chips, sweetened condensed milk, unsalted butter, and a pinch of salt.
3. Melt: Over medium heat, stir the mixture continuously until it is smooth and fully melted.
4. Add Vanilla: Remove from heat and stir in the vanilla extract until well combined.
5. Mix in Add-ins: If using nuts or crushed candy canes, fold them into the mixture now.
6. Pour: Pour the fudge mixture into the prepared baking dish, spreading it evenly.
7. Cool: Allow the fudge to cool at room temperature for about 10 minutes, and then refrigerate for 2 hours or until set.
8. Cut: Once set, lift the fudge out of the pan using the parchment overhang and cut it into squares.
9. Store: Store the fudge in an airtight container at room temperature or in the fridge for up to 2 weeks.

Following these steps will help you create the most amazing Christmas Fudge that everyone will love.