TAFFY APPLE SALAD

1 can pineapple chunks, drained and juice saved
2 cups mini marshmallows
½ cup sugar
2 T. flour
1 egg
1 ½ T. vinegar
2 red apples, unpeeled, cut in small pieces
2 green apples, unpeeled, cut in small pieces
8 oz. Cool Whip
1 ½ cups cocktail peanuts

Mix pineapple and marshmallows. Refrigerate. In saucepan, mix sugar, flour, egg, vinegar, and juice from pineapple. Cook until thick. Refrigerate also. Combine apples, Cool Whip, peanuts, sauce, and pineapple mixture. Refrigerate overnight.