How do I prevent the crispy crust on the edges of my cupcakes? Thank you.

personally its my favourite bit.

Bit its usually drying or caramalisation of the sugar within, so you can try lowering the sugar content a little, lowering the oven temp about 25degrees or if you simply want it softer, put a ramekin of water in the bottom of the oven while you bake.

Hope than helps

Great tip with the remekin of water in the oven! I used to have the same issue, but lowering the oven temp to 25 degree F and making sure it does not bake over the liner solved the problem.