Here are two methods to help keep your pie crust from bubbling up and becoming uneven.
Beans:
Cover your pie crust with parchment paper and fill with dried beans. I have also seen a product on Amazon that is small ceramic balls that do the same job.
Tin and Beans:
Place parchment paper on the pie crust, put another pie tin on top, fitting into the first one, then put dried beans on top of that to weight it down.
Note that after you have used beans for this purpose, they can not be eaten. A lot of people keep a jar of “pie beans” for this purpose and use the same ones over and over again.
