~ Pick over bb's, wash and set on paper towels to dry ~ Combine apple juice, vanilla, and couscous in a large saucepan and bring to a boil. ~ Cook, stirring constantly until thickened & all juice absorbed. Remove from heat. ~ Gently fold the bb's into hot mix. ~ Rinse but don't dry a 9x14 (inch) cake pan & pour the mix into it. ~ Chill until set, about 2 hours. ~ Cut into squares, and devour WITHOUT GUILT. Variations: Use strawberries in place of blueberries, top with unsweetened fruit jam thinned with a little water, arrange fruit slices on top for decoration.