Step 1: Preheat the Oven
Preheat your oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish.
Step 2: Cook the Noodles
Bring a large pot of salted water to a boil and cook the egg noodles according to the package instructions. Drain and set aside.
Step 3: Prepare the Filling
In a large mixing bowl, combine the cream of chicken soup, cream of mushroom soup, sour cream, milk, garlic powder, onion powder, paprika, salt, and pepper. Mix until smooth.
Stir in the cooked chicken, peas, and carrots (if using). Add the cooked noodles and mix until evenly coated.
Step 4: Assemble the Casserole
Pour the noodle mixture into the prepared baking dish.
Sprinkle the shredded cheddar cheese evenly over the top.
Step 5: Add the Topping
In a small bowl, combine the crushed Ritz crackers or breadcrumbs with the melted butter. Mix until evenly coated.
Sprinkle the topping over the cheese layer.
Step 6: Bake
Cover the dish with aluminum foil and bake for 20 minutes. Remove the foil and bake for an additional 10-15 minutes, or until the top is golden brown and bubbly.
Step 7: Serve
Let the casserole cool for 5 minutes before serving. Pair with a side salad or garlic bread for a complete meal.