Allow the meat to thaw for about half an hour. Cook the pasta according to the instructions on the package. Fry on low heat in a pan until the liquid has evaporated.
Add cooking oil and chopped onion to the pan, increase the heat, and brown. Season with black pepper and salt. Pour the hash and the pasta into a greased oven dish and mix.
Whisk the eggs lightly to break up their structure, add milk and 1 dl of grated cheese. Season with salt and pour into the oven dish. Sprinkle the remaining grated cheese and breadcrumbs on top.
Bake at 200 degrees Celsius for 40–50 minutes on the lower level of the oven until the surface has browned.