Creamy Fudge

1 1/2 cups sugar
1/2 cup butter
1- 5 oz can evaporated milk
1-7oz jar marshmallow cream
3 cups chocolate chips (semi-sweet or milk chocolate)
1/2 teaspoon vanilla extract
2 c walnuts, coarsely chopped (optional)

1. Lightly grease a foil lined 9x9x2 pan

2. Heat sugar, butter, milk and marshmallow cream in a 3 qt saucepan over medium heat, stirring constantly, until mixture boils.
Boil and stir for 5 minutes.

3. Add chocolate chips and vanilla, stirring until chips are melted. Stir in walnuts.

4. Immediately spread into pan and refrigerate overnight.