Start by peeling and dicing your butternut squash into bite size pieces, whilst pre-heating the oven to 180C. Lay the prepared butternut out on a roasting tray, drizzle with 1 tbsp olive oil, salt and pepper
Roast the prepared butternut squash for 20-25 minutes
Whilst the squash is cooking, start preparing the risotto. Add olive oil to a frying pan on medium heat, followed by the onion and garlic
Once the onion is translucent and the onion/garlic mixture is fragrant, add the risotto rice. Cook for 2 minutes, don't let it stick to the pan
Add your white wine to the pan, allow it to cook and evaporate over a few minutes
One ladle-full at a time, add the vegetable stock to the risotto, stirring frequently to encourage a creamy texture
When the squash is finished roasting, remove from the oven
Use the back of a fork to mash half of the squash into a paste - stir this paste through the risotto. Set the remainder of the cooked squash aside for serving
You should have about 5 minutes of cooking time left when adding the squash to the risotto
Add the sprigs of thyme to the risotto, continue stirring/cooking
Once all the stock is cooked into the risotto and it's 'al-dente', stir through the mascarpone and allow to warm for a moment
Season to taste with salt and pepper
Serve with parmesan and the remaining butternut squash