For a different flavor twist, you might try mixing in some diced jalapeños for an extra kick or adding a handful of crumbled bacon for a smoky note. You can also switch the cheese to a spicy pepper jack or go milder with mozzarella if that’s what you prefer. If you’re avoiding gluten, swap the all-purpose flour with a gluten-free blend. To make this casserole richer, a dollop of sour cream can be added to the batter. Remember, this recipe is versatile, so don’t hesitate to make it your own.