Treat your best friends to a batch of this chocolaty-rich homemade fudge.
In a large saucepan combine sugar, butter, and milk. Bring to a boil over medium-high heat, stirring occasionally. Reduce heat to medium and boil, stirring constantly, until mixture reaches 228 degrees F on a candy thermometer or a small amount dropped into ice water forms a 2-inch soft thread. Remove from heat and gradually stir in chocolate chips and chocolate until melted. Stir in marshmallow cream until well blended. Stir in vanilla and 1 cup nuts. Spread in a buttered 13x9-inch pan. Sprinkle remaining ⅓ cup nuts on top. Cool completely at room temperature. Cut into 1-inch pieces. Store in a cool place.