Anna's Mutant Squash Soup

Ingredients
2 Tbsp butter
1/2 cup chopped red onion
1/2 tsp salt
1 medium red potato, cubed
1 medium or 2 small apples, cubed
1 dried thai chili pepper, crushed
2 pinches dried sage
4 cups vegetable or chicken stock
2-3 cups cooked winter squash

Instructions
In a large soup pot, sautee red onion in butter and salt over med-low heat until soft, about 8 minutes.  Add cubed potato, apple, dried chilli, and sage. Heat until all veggies are soft.  Add stock and bring to a boil. Add cooked squash. Turn heat down to low and let simmer for about 15 minutes.  Remove from heat. Use blender or immersion blender to blend the soup until it has a smooth consistency.