Preheat the oven to 400° Fahrenheit. Lightly grease a 9x13 casserole baking dish with cooking spray.
Cook egg noodles according to the package instructions.
Putting the Casserole together
Combine eggs, milk, heavy cream, nutmeg, and salt and whisk until well combined.
Transfer cooked egg noodles into the casserole dish and top with diced ham. Pour the egg and cream sauce over the ham and noodles and add a layer of Swiss cheese.
Cover the casserole dish with foil and bake for 25-30 minutes at 400° Fahrenheit. Remove the foil and bake for an additional 5 minutes. Serve and enjoy.