Baking Temperature
Most cupcakes bake at 350 degrees Fahrenheit for 15 to 22 minutes, always check to see if cupcakes are done as soon as they reach the minimum baking time.
There are some factors that may cause the wrappers to stick such as the recipe of the cupcake or the unwrapping temperature.
The residual heat can cause the foil liners to stick, do allow the cupcake to cool for a few minutes in the pan then remove to a cooling rack to finish cooling.