1. **Melt Ingredients**: In a microwave-safe bowl, combine the chocolate chips, sweetened condensed milk, and butter. Microwave on high for 30 seconds, then stir. Repeat in 15-second intervals until the mixture is smooth and fully melted.

2. **Add Flavor**: Stir in the vanilla extract and a pinch of salt until well combined.

3. **Pour and Set**: Line an 8×8 inch baking dish with parchment paper. Pour the fudge mixture into the dish and spread it evenly. If desired, sprinkle toppings on top.

4. **Chill**: Refrigerate for about 1 hour or until set. Once firm, lift the fudge out of the dish using the parchment paper and cut into squares.

5. **Enjoy!**: Store any leftovers in an airtight container in the fridge.

### Tips:
– Feel free to experiment with different types of chocolate or add-ins!
– For a richer flavor, you can use a mix of chocolate types.

Enjoy your delicious fudge! 🍫