Spray the crock pot or use a liner
Stir the marinara, water, ricotta, and seasonings right in the crock
Break the noodles in, add the frozen meatballs and ½ cup of the mozzarella
Stir everything together and press the noodles down under the sauce
Cook on high, checking at 2 hours (or low, checking at 3)
Top with the rest of the mozzarella and the Parmesan, cover 20 min to melt
Rest 10 min with the lid off before scooping
