Preheat oven to 375. Spray a cookie sheet with non stick spray or brush with a little olive oil.
Cut squash vertically in half. Sprinkle insides with a little salt and pepper. Cut a thin slice from the bottom side so they will lie flat after we stuff them. Place face down on cookie sheet.
Bake in oven for 30 minutes, until flesh is fork tender.
Meanwhile let's make the filling.
Heat oil in a deep skillet. Add onion and garlic. Saute for a few minutes, until golden brown.
Add sausage, cumin, coriander, paprika and cinnamon. Stir fry for 5 minutes, until golden brown.
Add broth and dried fruit. Cook another 5 minutes.
Add spinach and cook until wilted. Add walnuts, salt and harissa. Stir to combine.
Divide evenly among squash halves.
Turn broiler on high.
Sprinkle breadcrumbs and cheese on top.
Broil for 5 minutes.