Variations:
Fill with just pastry cream along with unflavored gelatine.
Another option is to fill with some pastry cream (or pastry cream and cream cheese) and top with 1 recipe of <a href="https://glutenfreerecipebox.com/gluten-free-ganache/ "> Chocolate Ganache</a> using 1 cup heavy cream.
Of course, you can always change the cherry pie filling out for another flavor.
https://glutenfreerecipebox.com/gluten-free-cherry-custard-tart-no-bake-fillings/