Preheat oven to 425˚F.
Lightly grease a 9” spring form pan and place onto a baking sheet.
Fill a large pot with water and place over high heat. Add a small handful of salt followed by pasta to the water and boil until pasta is al dente, 5 to 6 minutes, stirring occasionally (you want the pasta to have more of a bite than you would normally want, since you’ll be baking it too).
Drain pasta in a colander and set aside.
In a large mixing bowl whisk together milk, cream, eggs, ¾ cup Parmesan, mozzarella, asiago, garlic, pepper, and salt until fully combined.
Add pasta to milk mixture and toss together until all pasta is evenly and well coated.
Pour mixture evenly into prepared springform pan, gently pressing pasta down to create a flatten top. Sprinkle extra pepper over top, cover tightly with foil and bake for 30 minutes.
After 30 minutes, remove foil, sprinkle remaining Parmesan over top and continue to bake for an additional 20 to 30 minutes or until pie has set in the center.
Remove pie from oven and allow it to cool for about 15 minutes. Release it from the pan, slice and serve.