How to stop my cupcakes from sticking to their cupcake wrappers?
Isn't that normal?

I suppose if it's causing a problem, you could use a non-stick (teflon, etc.) muffin pan, without the paper liners.

You could also try silicone-coated (parchment) liners. A quick check reveals that e.g., Amazon sells them.

&lt;purist>cornbread shall be cooked in preheated cast iron, and if that's sticking, you need to season your cast iron properly.&lt;/purist>