Used blueberries instead of cherries - to make again, will use ~1/2 the sugar. Thickened fine & topping wasn't too thick. Used orange liqueur instead.
Will make it again with changes. After baking the fruit filling for 20 minutes as directed, it still had not thickened at all. I spooned off some of the liquid and added another teaspoon of cornstarch before adding that mixture back into the fruit and baking for another 10 minutes. It still did not look like it had thickened. I don't think the orange juice concentrate added any flavor and made the topping too wet. I think omitting it would create a crispier topping. Pros: Doesn't use a lot of sugar. Cons: Fruit filling didn't want to thicken.
Tasty This recipe is great. Very good with very little added sugar. I only have two complaints: one, the topping is very thick, and almost impossible to spread. It needs more liquid or butter in it. Two, the filling doesn't taste quite as good as it may with only cherries. I will make it again, but will probably use extra liquid in the topping and use another cup of cherries instead of the raspberries. Pros: Healthy, tasty Cons: Topping is too thick