Preheat oven to 400F.
Place squash on baking sheet and dress with EVOO, salt, pepper, nutmeg and a drizzle of honey. Toss to combine then arrange in a single layer and roast to tender, 20 minutes. Remove half the squash to food processor and puree with a little water or stock.
Heat stock with saffron and 2 cups water in a saucepot. Keep warm over medium-low heat.
In a medium pot with rounded edges at bottom, heat 2 tablespoons EVOO over medium-high heat. Add bacon or pancetta and render to lightly crisp, 2-3 minutes. Add onions and garlic and stir to soften, 2-3 minutes more. Add rice and season with salt and pepper; toast 2 minutes, then stir in wine and let evaporate. Add a few ladles of stock at a time stirring rapidly with each addition to build starchy, creamy quality. Rice will take 18 minutes from first addition of liquid to cook to al dente.
Stir in squash puree and melt in butter. Add grated cheese and taste risotto for seasoning. Serve in shallow bowls garnished with reserved diced, roasted squash.