01 -
Pull the dish out of the oven and give it a few minutes to chill before serving. If you like, shower on some parsley, more Parmesan, or a dash of chili flakes.
02 -
Slide the casserole into the oven and bake until bubbling and the cheesy top gets golden, about 20–25 minutes. Want it extra crispy? Pop it under the broiler for 1–2 minutes but watch closely.
03 -
Spoon the whole mixture into your prepped dish, spread it out, and toss all that mozzarella cheese over everything.
04 -
In a big bowl, mix together your drained pasta, the chicken, and the broccoli. Dump in the Alfredo sauce and gently stir so it all gets coated.
05 -
Whisk in the milk and cream slowly so you don't get lumps. Keep whisking until it thickens up, about 4–5 minutes on a gentle simmer. Turn the heat down low and stir in the Parmesan, garlic powder, onion powder, salt, and black pepper. Mix until smooth and creamy—taste and tweak seasoning if you want.
06 -
Get your butter melted in a large pan over medium. Sprinkle in the flour, then stir for about a minute to make a smooth base.
07 -
If you haven't already, chop up your broccoli nice and small. Steam it for 3–4 minutes 'til it's bright green and a little tender. Make sure to drain off any extra water.
08 -
Boil a big pot of salted water. Toss in the dry pasta and let it cook till it's barely tender, around 8–10 minutes. Drain really well and keep it handy.
09 -
Turn your oven on to 190°C so it gets hot while you prep. Grab a 33x23 cm dish and wipe on some butter or spray—this keeps sticking from being a problem.