Make Cheese Layer: Add cream cheese, sour cream and ricotta to a mixing bowl. Beat with electric mixers until smooth. Stir in garlic and basil.

Make Red Sauce: In a large bowl, combine both jars of pasta sauce, tomato sauce and water.

Assemble: Add 2 cups of sauce to the bottom of the slow cooker. Top with about 1/3 of the uncooked penne. Dot on half of the ricotta mixture and use a spoon to gently spread it out evenly. Top with 3/4 cup grated parmesan cheese.

Add another 2 cups of sauce. Top with 1/3 of the uncooked penne. Add remaining ricotta mixture and spread. Sprinkle on the remaining 3/4 cup parmesan cheese. Add the remaining uncooked penne. Top with the remaining sauce. Make sure the ziti noodles are covered by the sauce so they cook appropriately. Top with mozzarella cheese.

Cook: Cover with lid and cook on HIGH for 2 hours, or LOW for 3 hours, or until pasta is tender. Serve garnished with fresh basil, if desired.