Creating BBQ Chicken Mac and Cheese is a fun and straightforward process! Just follow these steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Cook Pasta: In a large pot of salted boiling water, cook the elbow macaroni according to package directions. Drain and set aside.
3. Prepare Sauce: In the same pot, melt the butter over medium heat. Add the cream cheese and stir until melted and smooth.
4. Mix in Milk: Gradually pour in the milk, stirring continuously until well combined.
5. Add Cheeses: Add shredded cheddar and mozzarella cheeses to the mixture, stirring until melted and creamy.
6. Combine Ingredients: Stir in the cooked macaroni, shredded chicken, BBQ sauce, garlic powder, onion powder, salt, and pepper. Mix well.
7. Transfer to Baking Dish: Pour the mixture into a greased 9×13-inch baking dish.
8. Bake: Bake in the preheated oven for 25-30 minutes or until golden and bubbly.
9. Garnish: Remove from the oven and let it cool slightly. Top with chopped green onions if desired.
10. Serve: Dish out and enjoy your BBQ Chicken Mac and Cheese!

These steps will guide you through creating this incredible dish that seamlessly blends two classic favorites into one hearty meal.