Cook the Penne Pasta based on the package instructions to al dente.

Preheat the oven to 350 degrees F and spray a 9X13 baking dish with a non-stick cooking spray.

Melt the butter in a large skillet over medium high heat.  Add in the garlic and cook until you can smell the garlic (approximately 1-2 minutes).

Whisk in the flour and cook for 1 minute while whisking.

Whisk in the milk and heavy cream and bring the mixture to a low simmer (whisking occasionally) until the sauce thickens.

Add in the parmesan cheese, ½ cup of the shredded mozzarella cheese, salt and pepper.  Whisk until the cheese is melted and combined. Remove from heat.

Add the pasta and chicken to a large mixing bowl. Pour the sauce on top and gently toss to evenly cost the pasta and chicken with the sauce.

Pour the pasta mixture into the prepared baking pan and top with the remaining shredded mozzarella cheese.

Bake for 15-20 minutes until the pasta is bubbly and the cheese starts to brown on top.

Remove from the oven. Top with the chopped parsley (if using). Serve warm and enjoy!