For picky eaters, you can use a milder cheese like mozzarella or Colby Jack so the flavor stays creamy and gentle. If your family likes a little more flavor, try using a sharp cheddar or pepper jack for a bit of a kick. You can also swap sour cream for full-fat plain Greek yogurt if that’s what you have on hand, just know it will have a slightly tangier taste. To stretch the casserole for a bigger crowd without adding many carbs, stir in some steamed, chopped broccoli or cauliflower before baking. If you’re cooking for both low-carb and carb-loving folks, bake the casserole as-is and set out bowls of cooked rice, egg noodles, or mashed potatoes on the side so everyone can build their own plate. For extra convenience on a busy night, assemble the casserole earlier in the day, cover, and keep it in the fridge; then just pop it into the oven when you’re ready to start dinner—add a few extra minutes to the baking time if it’s going in cold.