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Chicken Alfredo Casserole

This Chicken Alfredo Casserole takes the classic pasta dish and transforms it into a convenient, make-ahead friendly meal. It's loaded with tender chicken, perfectly cooked pasta, and a rich, creamy homemade Alfredo sauce.
Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes
Servings 8

Ingredients
  

  • 1 pound penne pasta
  • 3 cups cooked diced chicken breast
  • 4 tablespoons butter
  • 4 cloves garlic minced
  • 3 tablespoons all-purpose flour
  • cups whole milk
  • 1 cup heavy cream
  • 2 cups freshly grated Parmesan cheese
  • 1 cup mozzarella cheese divided
  • 1 teaspoon Italian seasoning
  • ½ teaspoon salt or to taste
  • ¼ teaspoon black pepper
  • ¼ cup fresh parsley chopped

Instructions
 

  • Preheat your oven to 375°F (190°C). Grease a 9x13-inch baking dish.
  • Cook the penne pasta in salted water until just al dente (about 2 minutes less than package directions). Drain and set aside.
  • In a large saucepan, melt the butter over medium heat. Add minced garlic and cook until fragrant, about 1 minute.
  • Whisk in the flour and cook for 1-2 minutes to remove the raw flour taste.
  • Gradually pour in the milk and cream, whisking constantly to prevent lumps.
  • Simmer until the sauce thickens, about 5 minutes, stirring occasionally.
  • Remove from heat and stir in Parmesan cheese, ½ cup mozzarella, Italian seasoning, salt, and pepper.
  • Combine the cooked pasta, diced chicken, and Alfredo sauce in a large bowl.
  • Transfer to the prepared baking dish and top with remaining mozzarella.
  • Bake for 20-25 minutes until bubbly and golden on top.
  • Let rest for 5 minutes before serving. Garnish with fresh parsley.