1 small can evaporated milk
2 cups sugar
10 marshmallows, cut up
½ cup chopped nuts
1 6-oz pkg semi-sweet chocolate chips
1 teaspoon vanilla
1 cube butter or margarine, softened

In a large bowl, place the nuts, chips, vanilla and butter. Set aside.

In a heavy saucepan, combine first three ingredients and bring to a boil over medium heat. Boil 6 minutes, stirring constantly.

Pour boiled mixture over ingredients in the bowl. Whip until fluffy. Pour into a buttered 7" x 11" dish. Cut when firm.