Fresh Apple Salad

This is one of my most requested recipes!

8 cups chopped red apples, unpeeled
1 20 oz. can pineapple chunks, drained, reserve juice
2 cups seedless grapes
1 tsp poppy seeds
1 cup chopped nuts

Dressing:

Reserved pineapple juice
1/4 cup butter
1 Tblsp lemon juice
1/4 cup sugar
2 tsp. cornstarch
2 tsp. water
1/4 cup mayo
3/4 cup lemon yogurt

Make dressing first by combining first four ingredients in saucepan. Heat to boiling. Combine starch and water. Add. Cook until smooth. Chill. Add mayo and yogurt. Dress fruit. Add nuts right before serving.