In a large saucepan combine the sugar, cinnamon, salt, nutmeg and 1-3/4 cups water. Bring to a boil. Stir in the apples, raisins, apricots and lemon juice. Return to a boil. Reduce heat; simmer, uncovered, for 10 minutes, stirring occasionally.
Combine cornstarch and remaining water until smooth. Stir into pan. Bring to a boil; cook and stir for 2 minutes or until thickened. Transfer to a greased 13x9-in. baking dish.
In a small bowl combine biscuit mix and milk just until blended. Drop by tablespoonfuls onto hot apple mixture. Sprinkle with coarse sugar and lemon zest.
Bake at 400° for 15-20 minutes or until topping is golden brown. Serve warm with whipped cream.