Preheat the oven to 350 degrees F (175 degrees C).

Heat a large skillet over medium-high heat. Add ground beef, salt, black pepper, and onion salt; cook and stir until browned and crumbly, 5 to 7 minutes.

Combine ground beef, cream of chicken soup, and sauerkraut in a small casserole dish. Add noodles and water; stir to combine.

Bake in the preheated oven until noodles are tender yet firm to the bite and casserole is heated through, about 1 hour.