Cook the noodles until al-dente and let them cool.
In a mixing bowl, add the butter, breadcrumbs, onions, salt, mixed herbs, black pepper powder, and boiled and mashed potatoes. Mix everything together and bake for 10 minutes.
Next, add the cooked noodles, egg, melted butter, grated parmesan cheese, and mix.
Top the pie base with pizza sauce, grated mozzarella cheese, and the noodles mixture.
Add more of the pizza sauce and the grated mozzarella on top.
Bake at 180 degrees for 30-40 minutes or until the noodles turn crisp.