Preheat oven to 400°
Peel, core, and slice apples. I use the pampered chef apple peeler/slicer/corer.
In a medium bowl mix sour cream, sugar, flour, salt, vanilla, and egg together with a whisk.
Gently stir in apples to coat them completely.
Pour the mixture into a cast iron skillet I baked this one in a 10" for the photo above, but also have baked it in a 12" or you can use another pan of similar size, like a cake pan, or pie plate.
The smaller the diameter the thicker the pie will be.
This recipe can be easily cut in half and baked in an 8" pan for two large servings.
Bake for 20 minutes.