Preheat the oven to 400 F. Take your hollowed out butternut squash and brush it with oil, then season with salt and pepper. Bake for 25-30 minutes.
While the butternut squash is baking, heat the white sauce and season. Add the cheeses and melt in then add the macaroni. Stir to thoroughly coat the pasta.
Take the butternut squash out of the oven and fill with the macaroni cheese. Sprinkle with parmesan and breadcrumbs then return to the oven and bake for about another 15 minutes. Serve immediately and enjoy.