01 -  Preheat oven to 400°F. Toss butternut squash cubes with 1 tablespoon olive oil, salt, and pepper. Arrange in a single layer on a baking sheet and roast for 20 to 25 minutes until tender and caramelized. Set aside. 
 02 -  In a large saucepan, heat remaining 1 tablespoon olive oil and 1 tablespoon butter over medium heat. Add chopped onion and cook for 3 to 4 minutes until soft and translucent. Stir in garlic and chopped sage; cook for 1 minute until fragrant. 
 03 -  Add Arborio rice to the saucepan and cook for 1 to 2 minutes, stirring until the edges become translucent. 
 04 -  Pour in the dry white wine and stir continuously until the liquid is absorbed. 
 05 -  Add warm vegetable broth one ladle at a time, stirring frequently. Wait for most of the liquid to absorb before adding the next ladle. Continue this process until the rice achieves a creamy texture and is al dente, about 20 minutes. 
 06 -  Fold in roasted butternut squash. Stir in remaining 1 tablespoon butter and Parmesan cheese. Adjust seasoning with salt and pepper to taste. 
 07 -  Remove from heat, cover, and let the risotto rest for 2 minutes. Serve garnished with extra chopped sage and freshly grated Parmesan.