Fantasy Fudge

3 cups sugar
cup margarine
2/3-cup evaporated milk
1 cup chopped nuts
1-teaspoon vanilla
1 12-oz package semi-sweet chocolate chips
2 cups marshmallow cream

Combine sugar, margarine and milk in heavy 2- quart saucepan. Bring to a rolling boil, stirring constantly. Continue boiling 5 minutes over medium heat. Stir in chocolate pieces until melted. Add marshmallow cream, nuts and vanilla until well blended. Pour into greased 13 X 9- inch pan. Cool at room temperature. Cut into squares.