In a medium soup pot over medium heat, add the 1/4 cup apple cider, shallot, and garlic.
Let simmer for about 3 minutes; you want to soften the shallot and garlic without getting any color on them.
Peel and dice the butternut squash into 1-inch cubes. Try to make sure they are uniform size so you will have a uniform cook.
Add the cubed butternut squash to the pot.
Add a big pinch of kosher salt and ¼ tsp white pepper.
Add the chicken stock and apple cider.
Bring to a boil, reduce the heat, and let simmer for 20 minutes.
You should be able to smash a piece with a fork easily.
Remove from heat and purée. I like my stick blender, or you can use a food processor or a blender will also work.
Add in the sour cream and mix again.
Taste for seasoning.
Garnish with apple pie spiced croutons, and spiced cream.