Creating this Easy Homemade Chicken Pot Pie Casserole Recipe is straightforward. Follow these step-by-step instructions for the best results:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Prepare Filling: In a large bowl, combine the shredded chicken, frozen mixed vegetables, cream of chicken soup, milk, onion powder, garlic powder, salt, and pepper. Mix until well combined.
3. Grease Baking Dish: Lightly grease a 9×13 inch baking dish with cooking spray or butter to prevent sticking.
4. Spread Filling: Pour the chicken and vegetable mixture into the greased baking dish, spreading it evenly.
5. Add Cheese: If using, sprinkle the shredded cheddar cheese over the chicken filling for added creaminess and flavor.
6. Top with Crescent Rolls: Unroll the crescent roll dough and lay it over the filling. You can either spread the dough out to cover the entire surface or place the triangles over the filling for a rustic look.
7. Bake: Place the baking dish in the preheated oven and bake for 40-45 minutes, or until the crescent roll dough is golden brown and the filling is bubbly.

These simple steps will guide you to a delightful chicken pot pie casserole that your family will rave about!