To make the pie crust, combine all your dry ingredients together and whisk thoroughly.
Then add the butter, eggs and sour cream and mix well with a hand mixer. Make sure the butter has mostly combined with the other ingredients. If you still have small lumps of butter that is fine.The dough will be very sticky but that is okay. Once everything is combined, pull the dough into a ball and cover and chill for 1 hour.
When the hour is up, remove the dough from the bowl and turn out onto a floured surface. Use some flour on your hands if needed to pull the dough into a nicer ball shape and then use the floured rolling pin to roll it out into a circular shape.
Once rolled, place the crust in a buttered pie pan. Try not to stretch the dough at this point. It will shirk more if the gluten springs back. Make sure it goes all the way to the edges or even has some overhang. Plan for the crust to shrink a little bit.
Then crimp the edges of the pie and prick the bottom of the crust with a fork several times. Let the dough rest for at least 20 minutes in the pie pan to let the gluten settle. This will all help the pie crust so it doesn't shrink too much.
Preheat oven to 400 degrees.