Dump cake mix into a large bowl, add pie filling. Stir with a sturdy spoon until everything is moistened. Don't use a mixer!
Spray both Silikong egg-bite molds thoroughly. Fill the cavities of the molds just barely to the top.
Put 1-1½ cups water into the inner pot and place the Silikong molds inside.
Close the IP lid and set to High Pressure for 35 minutes.
Natural release for 10 minutes. Quick-release remaining pressure. When lifting the lid, be careful condensation doesn't run into cakes. Check for doneness with a toothpick.
Let cool in molds for a couple of hours so they firm up.