Boil a large pot of water, cook pasta according to package directions, then drain and set aside.
3 cups Uncooked pasta
In a skillet, melt the butter over medium heat and sauté the onions until soft, about 3-4 minutes.
2 tbsp Butter, 1/2 cup Chopped onion
Sprinkle flour into the skillet with the onions and stir for 1-2 minutes. Gradually add chicken broth and heavy cream, stirring constantly until the sauce thickens. Season with garlic powder, salt, and pepper.
2 tbsp All-purpose flour, 2 cups Chicken broth, 1 cup Heavy cream, 1 tsp Garlic powder, 1/2 tsp Salt, 1/4 tsp Black pepper
In a large bowl, mix the cooked pasta, shredded chicken, and thawed vegetables together. Pour the cream sauce over and stir to combine.
2 cups Shredded chicken, 1 cup Frozen mixed vegetables
Transfer the mixture to a greased 9x13 baking dish. Sprinkle shredded cheddar cheese on top and bake at 375°F for 20 minutes, until the cheese is melted and bubbly.
1 cup Shredded cheddar cheese
Remove the dish from the oven and let it cool slightly before serving. Enjoy your Chicken Pot Pie Pasta Bake!