6-8 cups chicken broth (use vegetable broth for vegetarian option, and gluten-free stock for gluten-free version)
5 Tbsp unsalted butter, divided into 4 Tbsp and 1 Tbsp
1 small onion, finely chopped
2 cups butternut squash, peeled, and finely diced
2 cups arborio rice (can substitute medium grained white rice, but arborio is preferred)
1 cup dry white wine (such as Sauvignon Blanc)
1 cup freshly grated Parmesan cheese
2 Tbsp chopped chives or garlic chives
Salt