Muffin sticks to paper cases

Question

Today I tried to cook my favourite Raspberry and White Chocolate muffins using a recipe I found on BBC Good Food.

However after cooking them for the set amount of time and removing them from the muffin tray I found that when I tried to peel away the paper cases (from the muffin) the muffin stuck to the case.

The mixture itself was cooked but for some reason it stuck to the paper cases, this is also odd because I've done this recipe before and it worked fine. I've tried to think of any factors that may have changed when cooking for a second time and all I can think of are:

• The raspberries were cut slightly larger (in half rather than in quarters/thirds)
• Slightly less egg whites were used (because of a slight spill)

Could these factors have caused the muffin to stick to it's paper case?

Answer

Turns out I hadn't left them to cool long enough. After I left them for about 2-3 hours and tried again to peel the case off, it came off perfectly and nothing stuck to it.

Sorry about the false alarm but I never thought that not leaving them to cool long enough would have caused this kind of problem.

Thanks for all your answers!

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