Preheat your oven to 350°F.
Chop the onion and mince the garlic.
In a large skillet, cook the ground beef, onion, and garlic over medium heat until browned, about 5 to 7 minutes. Drain excess fat.
Boil egg noodles in salted water according to package instructions, about 7 to 9 minutes. Drain and set aside.
In the skillet, mix in cream of mushroom soup, sour cream, salt, black pepper, dried parsley, and water. Fold in the drained egg noodles.
Transfer mixture to a greased 9x13-inch baking dish and sprinkle cheddar cheese on top.
Cover with foil and bake for 25 minutes. Remove foil and bake for an additional 15 minutes until cheese is bubbly and golden brown.
Let cool for 5 minutes before serving.