Fudge

My grandmother use to make a Rocky Road fudge and would add mini marshmallow and walnuts to her fudge. I made this for someone so I did not add caramel or nuts like I wanted to because I was not sure if she likes them added to her fudge. Next time I will. :)

1 (7 ounce) jar marshmallow creme
1 1/2 cups white sugar
2/3 cup evaporated milk
1/4 cup butter
1/4 teaspoon salt
2 cups milk chocolate chips
1 cup semisweet chocolate chips
1 teaspoon vanilla extract

Line an 8x8 inch pan with aluminum foil. Set aside.
In a large saucepan over medium heat, combine marshmallow cream, sugar, evaporated milk, butter and salt. Bring to a full boil, and cook for 5 minutes, stirring constantly.
Remove from heat and pour in semisweet chocolate chips and milk chocolate chips. Stir until chocolate is melted and mixture is smooth. Stir in vanilla. Pour into prepared pan. Chill in refrigerator for 2 hours, or until firm