Line a sheet pan with parchment paper. Place the meatballs on the sheet pan bake for 20 minutes.
While the meatballs are baking bring a large pot of water to a boil add the egg noodles in and boil them according to the package instructions. Drain and set to the side.
To a large Dutch oven or pot on the stove over medium heat add the butter. Once the butter melts whisk in the flour until a golden color now slowly whisk in the both. Make sure you whisk it in slowly so the flour doesn’t get clumpy.
Bring up to a simmer whisking occasionally for 3-4 minutes or until the sauce has thickened. Once the sauce is thickened whisk in the sour cream. Add in the meatballs and egg noodles. Cook everything together for 3 minutes. Serve.