In this video, we'll show you how to use your slow cooker to prepare a vegetarian and gluten-free side dish. The star of the show is spaghetti squash. Once cooked and shredded into strands, the squash resembles spaghetti. Get the recipe for Slow Cooker Spaghetti Squash. Try in place of spaghetti, topped with meatballs and tomato sauce.