In pan, heat olive oil over medium high heat. Then sauté your onions for a couple of minutes. Add garlic and saute for another minute. Add in your sausage cook until it is browned.
Combine water, diced tomatoes, chicken broth, carrots, corn, and Italian seasoning to your slow cooker. Add in salt and pepper to taste. Cook on low heat 6-8 hours or high 3-4 hours.
Then add in pasta, spinach and cook on high heat for an additional 20- 25 minutes until pasta is tender. Serve and Enjoy!