apple crumble with oats
Fragrant Apple Filling
Apples are certainly the key ingredients. You can use cooking apples (or apples for baking), but actually, any kind will be OK as long as you are fine with either a mushier or chunkier apple part. Also, if you choose tart apple, you might need to add more sugar to stabilize the tangy flavor. Yet when I add sweet apples, I occasionally completely omit the sugar in the apple mixture.
However, cinnamon for me is a required ingredient in the apple part of the crumble. One teaspoon ground cinnamon makes sure the treat (as well as your whole home!) will scent beautiful. You can additionally include some cloves to your apple treat for some additional taste.