Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish.
Mix the Filling
In a large bowl, combine chicken, ranch seasoning, cream of chicken soup, sour cream, garlic powder, onion powder, and a pinch of salt and pepper.
Add Pasta and Cheese
Stir in the cooked rotini and 1.5 cups of shredded cheddar cheese until everything is well combined.
Assemble the Casserole
Pour the mixture into the prepared baking dish and spread it evenly. Sprinkle the remaining ½ cup of shredded cheese on top.
Prepare the Cracker Topping
In a small bowl, mix crushed crackers with melted butter. Sprinkle evenly over the casserole.
Bake
Bake uncovered for 30 minutes, or until the casserole is bubbly and the topping is golden brown.
Serve
Let it cool slightly before serving. Enjoy warm with a side salad or steamed vegetables.
Serving and Storage Tips
