Ingredients

• 12 oz bittersweet or semisweet chocolate, finely chopped
• 2 cups toasted walnut, pecan, macadamia, or other nuts, chopped, optional
• 10 tbsps unsalted butter, at room temperature
• 1 tbsp pure vanilla extract
• 20 large marshmallows
• 4 cups sugar
• 2 5-oz cans evaporated milk

Instructions

1. Combine the chocolate pieces, nuts (if using), butter, and vanilla in a large heatproof bowl. Set aside.
2. Place the marshmallows, sugar, and evaporated milk in a heavy-bottomed saucepan over medium heat. Stirring constantly, bring to a boil. Continuing to stir, boil for exactly 6 minutes.
3. Remove from the heat and immediately pour the marshmallow mixture into the chocolate mixture; beat constantly until creamy. Quickly pour into the prepared pan or platter, pushing slightly with the back of a wooden spoon to spread the fudge evenly.
4. Cool for at least 1 hour before cutting into pieces. Serve at room temperature.