Preheat oven to 350F

Cut the butternut squash in half and brush 2 tablespoons of olive oil over the flesh part (not the skin).

Roast the butternut squash for 25-40 minutes, until slightly browned and an inserted skewer goes through the squash with little effort.

Scoop the butternut squash out of the skin and place in a large bowl.

Heat the remaining olive oil in a large stockpot over medium heat.

Add the garlic, onion and herbs.

Saute until the onion is translucent, then add 1 1/2 cups of the squash and stir well.

Thin the solution out with broth and allow it to come to a boil.

Meanwhile, cook the spaghetti according to package directions.

Use an immersion blender to puree the butternut squash mixture.

Stir in the cooked & drained spaghetti and stir to coat with the butternut squash sauce.

Serve hot.