Ingredients
Method
- 1. Preheat the Oven: Set to 350°F (175°C). Lightly grease a 9x13-inch baking dish.
- 2. Cook the Aromatics: In a large skillet, melt butter over medium heat. Add onion and sauté until soft, about 3 minutes. Stir in garlic and cook for 30 seconds.
- 3. Make the Roux: Sprinkle flour over the onion mixture and stir for 1 minute to remove the raw flour taste.
- 4. Create the Sauce: Slowly whisk in milk until smooth. Stir in sour cream, 3 cups shredded cheese, red pepper flakes, salt, and pepper. Cook until the cheese melts and the sauce thickens.
- 5. Combine: In a large bowl, mix cooked pasta, chicken, and the cheese sauce until evenly coated.
- 6. Assemble: Spread mixture into the prepared baking dish and sprinkle remaining cheese over the top.
- 7. Bake: Cook uncovered for 20–25 minutes, until bubbly and golden brown on top.
- 8. Serve: Let the casserole rest for 5 minutes before serving for easier scooping. Enjoy warm!
Notes
This recipe is highly customizable — try adding chopped broccoli, peas, or diced bell peppers for extra flavor and color. For a little crunch, top with buttery breadcrumbs or crushed Ritz crackers before baking.
