PREPARATION:
Prepare Your Baking Dish: Preheat the oven to 350°F (175°C). Lightly coat a 2-quart casserole dish with nonstick spray to ensure easy cleanup.
Combine Ingredients: In a large mixing bowl, stir together the shredded chicken or ground beef, 1 cup of shredded cheese, cream of chicken soup, Rotel tomatoes, sour cream, milk, and taco seasoning until fully mixed.