Doesn’t get much easier than that and so delicious.
Cut squash in half, scoop out seeds. Put In microwavable dish with a bit of water at the botton, cover with plastic film. Nuke for 12 minutes more or less.
Fry the sausages on the side meanwhile.
Scrape the “noodles” into a bowl with butter, pesto and parmesan, add sliced sausages. Oh yeah

Here’s my favourite recipe. I usually leave out the tomatoes (or use just a few if they’re from the garden) and add leftover shredded chicken. Warning: it helps if you like garlic.