**Step 1:** In a saucepan, combine the sugar, evaporated milk, unsalted butter, and salt. Cook this mixture for five minutes, stirring continuously to ensure even cooking.
**Step 2:** Incorporate the milk chocolate chips into the mixture while stirring, and cook until they are completely melted. Once melted, remove the saucepan from heat and add the marshmallows, vanilla extract, and chopped nuts. Stir thoroughly to blend all the ingredients.
**Step 3:** Pour the fudge mixture into an 8-inch pan. Allow it to cool before cutting it into squares. Serve and enjoy!