Preheat oven to 400.
Place cubed squash and sliced mushrooms onto a baking tray. Season with melted butter, olive oil, thyme, salt and pepper. Toss to coat.
Bake for 20-25 minutes until the squash is soft and mushrooms start to brown. Remove from oven and set aside.
Heat a large deep sided pan over medium heat with remaining butter and 2 tbsp olive oil.
Add chili flakes and diced onion to the pan. Saute until onion starts to soften then add in garlic. Saute until fragrant.
Deglaze the pan with Nozeco, scraping up any bits off the bottom of the pan.
Add in the rice and another splash of Nozeco. Stir the rice so it is coated and toast it for 1-2 minutes before adding 2 ladles of broth.
Stir the rice until broth is absorbed, then add more broth. Continue this process until all the broth is finished and rice is done.
This process can take up to 30 minutes so be patient.
Finish the risotto with lemon juice, spinach, cheese and season with salt and pepper. Fold in half of the squash and mushrooms reserving the other half for garnish.
Check for seasoning, plate the risotto and enjoy.