Original Kraft Fantasy Fudge

3 cups sugar
¾ cup margarine
2/3 cups evaporated milk
1 12-oz. pkg. chocolate chips
1 7-oz. jar Kraft Marshmallow crème
1 cup chopped nuts
1 T. vanilla

Microwave margarine in a 4-quart microwave-safe bowl on HIGH 1 minute or until melted. Add sugar and milk; mix well. Microwave on HIGH 5 minutes or until mixture begins to boil, stirring after 3 minutes. Mix well. Scrape bowl. Continue microwaving on HIGH 5 ½ minutes; stir after 3 minutes. Stir in chips until melted. Add remaining ingredients; mix well. Pour into greased 13 x 9 baking pan. Cool at room temperature. Cut into squares.

Yields: 3 pounds