Preheat oven to 350 degrees. Lightly grease a 9x13 casserole dish.
Brown sausage in a skillet and drain any grease. Stir in spaghetti sauce and water.
In a medium bowl, whisk together cream cheese, milk and minced garlic.
Spread half of the meat sauce mixture on the bottom of the 9x13 dish. Place a single layer of ravioli over the sauce. Cover with cream cheese mixture. Sprinkle with ¾ cup of shredded cheese. Layer on remaining ravioli, meat sauce and cheese.
Lightly spray one side of a piece of foil with cooking spray. Set greased side down over lasagna and seal edges. Bake for 40 minutes. Remove foil and bake another 10 minutes.
Let stand for 10 minutes before serving.
Recipe by Crumbs and Chaos at http://www.crumbsandchaos.dreamhosters.com/2015/02/ravioli-lasagna/