1 (14 ounce) can sweetened condensed milk
1/3 cup lemon juice
1 (20 ounce) can crushed pineapple, drained
1 (6 ounce) can mandarin oranges, drained
1 cup chopped pecans, optional
1 (8 ounce) frozen whipped topping, thawed
2 (9-inch) graham cracker crusts
In a large bowl, beat together condensed milk and lemon juice. Stir in pineapple and oranges. Add pecans, if using. Fold in whipped topping. Spoon mixture into graham cracker crusts. Refrigerate at least 2 hours before serving, or can be frozen.