Nana's Spiced Squash & Apple Soup

This is Yelena's "desert island dish" - if she were stuck on a desert island and could only eat one thing, I'm pretty sure this would be it.  My mother has made it for us a couple times, and I've made it once or twice, and it's orgasmic every time.  This was originally from a cookbook, but the recipe has been modified so much that I feel confident giving credit to my mother instead.
The original recipe calls for butter, not margarine, but I switched to make it kosher.  The original recipe also calls for green apples, but I can attest that it works just as well with a nice tart red apple, like Pink Lady (one of my favorites).  I don't use any salt or pepper.
You will want to double this recipe.