Chocolate Holiday Fudge

Ingredients

• 12 ounces (340 g or about 1 1/2 cups) dark chocolate, chopped
• 1 14-oz can sweetened condensed milk
• 2 tbsp butter, salted (if using unsalted butter, add a pinch of salt)
• 1 cup toasted chopped walnuts, hazelnuts, almonds, or pistachios (optional - you can leave the nuts out entirely if you want)