Use a long macaroni noodle. This will be a little thicker than thick spaghetti and have a hole running down the middle which apparently helps the thick pasta cook consistently all the way through. It’s basically perciatelli or bucatini pasta. Luxury Brand offers a long macaroni, which is what I use (I have no affiliation with Luxury) but if that’s not available where you live, perciatelli and bucatini are available through Amazon (which I do have an affiliation with!).