Preheat the oven to 350°F (175°C). Lightly butter a 2-quart casserole dish.

Cook the egg noodles in boiling salted water just until tender. Drain thoroughly.

Mix the sour cream and cottage cheese in a bowl until combined.

Spread a little melted butter in the dish. Layer noodles, cheese mixture, and drizzles of butter until everything is used. Finish with butter on top.

Bake uncovered for 30 to 40 minutes, until golden and crisp at the edges. Rest 10 minutes before serving.