Boil broccoli in a large pot of salted water for 2min then remove and set aside to cool. In the same pot of water, cook pasta according to packet instructions.
Whilst pasta is cooking, heat olive oil in a large, non-stick frypan. Sear and brown chicken on high heat then remove.
Then, soften onions garli in butter. Mix in flour.
Once a thick paste is formed, add milk, stir well until milk thickens then stir in stock. Bring up to a boil then turn the heat off.
This is the creamy white sauce!
Add browned chicken back into the pan with broccoli, cream, oregano, salt and pepper.
In a large casserole oven dish, mix cooked pasta and pour in creamy chicken and broccoli.
Top with grated mozzarella cheese and parmesan cheese. Bake till golden.