For an extra layer of flavor, consider adding a pinch of smoked paprika or a dash of gochujang (Korean chili paste) to the cheese sauce. Ensure the kimchi is well-drained to prevent the mac and cheese from becoming watery. Feel free to experiment with different types of cheese, such as Gruyere or pepper jack, to customize the flavor profile to your liking. To prevent the bread crumbs from burning, you can cover the casserole dish with foil during the last 10 minutes of baking.