Marshmallow Fluff Fudge

My Christmas memories growing up, always included my mom making fudge, along with red, white, and green divinity, caramel popcorn balls, and cornflake clusters. She'd make two batches of fudge during Christmas break, one with nuts, one without. I can still see it on the kitchen table, waiting for it to set up, before she'd cut it into little squares to be devoured. So rich, but oh so good!

2 1/2 c. granulated sugar
3/4 c. butter
2/3 c. evaporated milk
12 oz package semi-sweet chocolate chips
7 oz. jar marshmallow cream
1 t. vanilla

1) Line a 9 inch square pan with foil, and spray with nonstick spray. Set aside.
2) In a 3 quart heavy saucepan over high heat, combine sugar, butter, and evaporated milk. Use a wooden spoon to stir slowly until butter melts, scraping sides of pan frequently.
3) Bring to a full rolling boil, stirring constantly. Once it starts boiling, set a timer for 5 minutes and turn the heat down to medium. Stir constantly.
4) Remove from heat, and add chocolate chips. Stir until mixture is smooth. Add marshmallow creme, and beat with spoon until well blended. Add vanilla an mix well. Immediately pour into the prepared pan.
5) Let cool to room temperature.
6) Slice and serve. Store covered on the counter.