1. In a microwave glass bowl, place the brown sugar and cornstarch and mix well.
2. Add the apple juice and cook covered on HIGH (9) for 2 1/2 minutes until thick. Ensure that you stir during cooking.
3. Add the apples and prunes and cook covered on HIGH (9) for 2 minutes.
4. Sprinkle with lemon juice
5. Season to taste with salt and allspice