Favorite Apple Salad -Chelsea

1 (20 oz.) can pineapple chunks
1/4 cup butter or margarine
1/4 cup sugar
1 Tbsp. lemon juice
2 Tbsp. cornstarch
2 Tbsp. cold water
1 cup mayonnaise
8 cups chopped tart apples
2 cups green grapes
2 tsp. poppy seeds
3/4 cup chopped pecans toasted

Drain pineapple, reserving juice; set pineapple aside. Place juice in saucepan. Add butter, sugar, and lemon juice. Bring to a boil. Combine cornstarch and cold water until smooth. Add to the saucepan, stirring constantly. Return to a boil, cook and stir 2 minutes. Chill, then stir in mayonnaise. In a large bowl combine pineapple, apples, grapes, poppy seeds, and cooked dressing. Fold in pecans just before serving. Serves 14.