Combine all three cheeses and salt in a medium bowl. Rinse ziti under cold water in a colander, allowing some water to cling to pasta.
Mist inside of slow cooker with cooking spray. Place half of pasta in an even layer over bottom of cooker. Spoon half of sauce over pasta. Dot with half of cheese mixture and half of basil. Repeat with remaining pasta, sauce, cheese and basil. Pour in 2/3 cup water.
Cover and cook on high until pasta is tender, 2 to 3 hours.
I gave this recipe a try because I love using my crock pot. I followed it to the letter except for cooking. The recipe said it would take 2-3 hours to cook. By accident I set it on low instead of high. I remembered this after it cooked for 2 hours. To my surprise it was done. But, upon tasting it, it was over done. The pasta was mushy and the entire recipe was starchy even though I used a brand name pasta. I can only imagine how it would have turned out if I had remembered to cook it on high. I won't be trying this again as I do not know where I went wrong. I will stick to using my oven for my baked ziti from now on.
This is definitely a good, solid family meal. Our 6 year-old was found it absolutely delicious and inhaled her serving. It's easy to make, and perfect for those afternoons when life suddenly gets crazy because it only needs 3 hours in the crock pot. You can read my full review, which includes what I'd do different next time at: http://bit.ly/OJusaH