Preheat your oven to 200°C/180°C(fan)/400°F/Gas 6.
Add 1 kg Butternut squash, 1 tablespoon Olive oil, 0.5 teaspoon Cinnamon and 1 pinch Sea salt and ground black pepper to a roasting tray. Mix so all the cubes are coated and roast for 30 minutes.
Add the roasted butternut squash to a blender and blend until smooth.
Put the blended squash into a pan with 2 Garlic clove, 2 tablespoon Creme fraiche, 100 ml Vegetable stock and 30 g Parmesan and heat through (about 2 minutes).
Notes
Top the finished dish with pine nuts for some added crunch.
Butternut squash has a naturally sweet taste, and you can add to that by swapping the onions for shallots.
You can make these pasta sauce even creamier by stirring through some creme fraiche or cream cheese.
For extra flavour, roast the butternut squash with finely chopped fresh sage. It compliments the butternut squash perfectly.
If you want to keep this vegetarian, make sure to use a vegetarian hard cheese. Most supermarket own brand Italian hard cheese is vegetarian.