Cut you butternut squash in half. Remove seeds. Save seeds to plant for next year.
Place cut side down in baking dish. Bake on 350 for 1 hour or until soft.
While the squash is baking, you want to caramelize your onions. Add oil to cast iron frying pan, add onions, cook on medium heat for about a half hour. The onions will sweeten and get brown.
Add squash, apples, onions, chicken stock, apple juice and spices to your slow cooker. and cook on low for a couple of hours. Blend well with a hand blender.
Serve with a dollop of plain yogurt or cream. Chopped apples and candied walnuts also work well on top.