Step 1: Cook the Chicken
Dice chicken into bite-sized pieces.
Season with chicken seasoning, onion granules, smoked paprika, salt, and rosemary.
Heat a little oil in a skillet over medium heat.
Cook chicken for 8 to 10 minutes until golden brown and fully cooked. Set aside.
Step 2: Cook the Pasta and Broccoli
Bring a large pot of salted water to a boil.
Cook rigatoni according to package instructions.
During the last 2 minutes of cooking, add broccoli florets.
Drain and set aside.
Step 3: Make the Cheese Sauce
Melt butter in a saucepan over medium heat.
Add garlic and cook for 1 minute until fragrant.
Stir in flour and cook for 1 to 2 minutes while stirring continuously.
Gradually whisk in milk until smooth.
Simmer for 3 to 5 minutes until thickened.
Stir in onion powder, paprika, and parsley.
Add cheddar, gouda, and mozzarella cheese. Stir until smooth and creamy.
Step 4: Assemble and Bake
Preheat oven to 180°C fan / 200°C conventional.
In a large bowl, combine cooked pasta, broccoli, chicken, and cheese sauce. Mix well.
Transfer mixture to a greased baking dish.
Sprinkle remaining cheddar cheese over the top.
Bake for 25 minutes until golden, bubbling, and lightly crisp on top.
Let cool for 5 minutes before serving.