Preheat your oven to 400°F (200°C). Prepare your baking dish.

In your baking dish, combine butternut squash, garlic, and feta cheese. Drizzle with olive oil, then sprinkle thyme, salt, and pepper.

Place the baking dish into the preheated oven and roast for 30-35 minutes.

While the mixture roasts, bring a large pot of salted water to a boil. Cook pasta until al dente, reserve pasta water, and drain.

Transfer the roasted mixture into a blender, add reserved pasta water, and blend until smooth.

Combine cooked pasta with the blended sauce in a mixing bowl.

Serve warm, garnished with fresh thyme or chili flakes if desired.