Add water and pasta sauce, reserving a small amount of sauce to line bottom of crock pot. Stir until well blended.
Line bottom of crock pot with very thin layer of sauce, then top with 2-3 uncooked lasagna noodles that are broken to fit shape (some overlap is fine).
Cover noodles with half the cottage cheese, mozzarella cheese, and Parmesan cheese, then top cheeses with half of the meat mixture.
Repeat layers with the other half of the ingredients.