In a saucepan, combine the chocolate chips and sweetened condensed milk over low heat. Stir continuously until the mixture becomes silky smooth, which will take about 5-7 minutes.

Remove the saucepan from heat. Stir in the vanilla extract and your green food coloring, mixing until your desired shade of festive green is achieved.

Pour the fudge mixture onto a parchment-lined baking sheet. Spread it out evenly, then refrigerate for about 60 minutes, or until it feels firm to the touch.

Once the fudge is solid, use a cookie cutter or a knife to cut it into adorable tree shapes.

Let your artistic flair shine as you decorate your fudge trees with sprinkles or candy stars.