Preheat your oven to 400°F (200°C) and gather all your ingredients.

In a large mixing bowl, combine hash browns, shredded chicken, bacon bits, cheddar cheese, mixed vegetables, cream of chicken soup, milk, and dried thyme. Stir until well combined.

Lightly grease a 7x11-inch baking dish and pour the casserole mixture into it, spreading evenly.

In a separate bowl, mix crushed Ritz crackers with shredded cheddar cheese and sprinkle over the casserole.

Cover with aluminum foil and bake for 30 minutes.

Remove the foil and bake uncovered for an additional 15 minutes or until the topping is golden brown.

Let rest for 10-15 minutes before serving.