01 -
Preheat oven to 375°F. Cook 12 oz penne pasta according to package directions until al dente. Drain well and set aside. This initial step sets the stage for your delicious Easy Chicken Penne Casserole.
02 -
In a large pot or Dutch oven, melt 2 tbsp unsalted butter over medium heat. Add 1/2 medium yellow onion, finely chopped, and cook for 3-4 minutes until softened. Stir in 2 cloves garlic, minced, and cook for another minute until fragrant.
03 -
Sprinkle 2 tbsp all-purpose flour over the onion and garlic, stirring for 1 minute. Gradually whisk in 2 cups chicken broth and 1 cup whole milk until smooth. Bring to a simmer, then add 4 oz cream cheese, softened and cut into cubes, stirring until melted and the sauce is thick and creamy.
04 -
Remove the pot from heat. Stir in the cooked 12 oz penne pasta, 2 cups cooked chicken, shredded, 1 cup frozen peas, 1 tsp dried Italian seasoning, 1 tsp salt, and 1/2 tsp black pepper into the creamy sauce. Ensure all ingredients are well combined for your Easy Chicken Penne Casserole.
05 -
Transfer the entire mixture to a 9x13 inch baking dish. In a small bowl, combine 1 1/2 cups shredded sharp cheddar cheese and 1/2 cup panko breadcrumbs. Sprinkle this topping evenly over the casserole.
06 -
Bake the Easy Chicken Penne Casserole for 25-30 minutes, or until bubbly around the edges and the topping is golden brown and crispy.
07 -
Remove the casserole from the oven and let it rest for 5-10 minutes before serving. This allows the sauce to set, making for a perfect Easy Chicken Penne Casserole experience.