1. Melt the chocolate and butter

• In a medium saucepan over low heat, add the chocolate chips, sweetened condensed milk, and butter.
• Stir continuously until the chocolate and butter are fully melted and the mixture is smooth.
• Be careful not to overheat the mixture; low and slow is best to prevent burning.

2. Add vanilla extract

• Remove the saucepan from the heat and stir in the vanilla extract.
• Mix well to ensure the flavor is evenly distributed throughout the fudge.

3. Pour and smooth the mixture

• Line an 8×8-inch baking dish with parchment paper, leaving a little overhang on the sides for easy removal.
• Pour the fudge mixture into the pan and spread it evenly with a spatula to smooth the top.

4. Chill until firm

• Place the pan in the refrigerator and chill for at least 2 hours or until the fudge is completely set.
• Once set, lift the fudge from the pan using the parchment overhang and cut into squares.