1 large can pineapple tidbits, drained (reserve juice)
2 c. miniature marshmallows
1 egg, well beaten
1/2 c. sugar
1 tbsp. flour
1 1/2 tbsp. white vinegar
1 1/2 c. Spanish peanuts
3 c. diced Fuji apples
8 oz. Cool Whip

Mix pineapple and marshmallows. Refrigerate. Combine pineapple, juice, egg, sugar, flour and vinegar. Cook over medium heat until thickened. Refrigerate overnight. Combine pineapple-marshmallow mixture, sauce, peanuts, apples and Cool Whip; chill.