Expert Tips – Use Granny Smith Apples –I’ve tried other types of apples before, but I always come back to these. They’re crisp and not too sweet—in my opinion, the perfect apple for anything related to crisps! Honey crisps are pretty good as well, although I would reduce the sugar a bit because they tend to be sweeter apples.. – Slice your apples thinly and small, so they become much more tender when baked. If not done properly, you will have chunks of raw apples which is not the desired outcome. – Serve warm . If you want to enjoy your leftovers with all the fixings still in tact, reheat them without the topping.