Creating BBQ Chicken Mac and Cheese is simple when you follow these easy steps:

1. Cook the Pasta: In a large pot, bring water to a boil and add a pinch of salt. Cook the macaroni according to the package instructions until al dente. Drain and set aside.

2. Preheat Oven: Preheat your oven to 350°F (175°C).

3. Prepare Chicken: In a mixing bowl, combine the shredded chicken with the BBQ sauce. Stir until the chicken is evenly coated with the sauce.

4. Make Cheese Sauce: In a large saucepan over medium heat, melt the butter. Add 1 cup of shredded cheddar cheese, mozzarella cheese, and milk. Stir continuously until the cheeses are melted and the mixture is smooth. Season with salt and pepper to taste.

5. Combine Ingredients: In a large mixing bowl, combine the cooked macaroni, BBQ chicken, and cheese sauce. Mix until everything is well combined.

6. Transfer to Baking Dish: Pour the macaroni mixture into a greased baking dish. Spread it evenly.

7. Add Topping: If desired, sprinkle the remaining shredded cheddar cheese and breadcrumbs on top for added texture.

8. Bake: Place the baking dish in the preheated oven and bake for 20-25 minutes or until the top is golden brown and bubbly.

9. Garnish: After removing the dish from the oven, let it cool for a few minutes. Garnish with chopped green onions for a pop of color.

10. Serve Warm: Serve hot and enjoy this mouthwatering BBQ Chicken Mac and Cheese!