Mac and cheese is classic comfort food that's loved by kids and adults alike. But if you're looking to cut back on your carbs or follow a gluten-free or keto diet, then it's not usually an option. Thanks to a simple ingredient swap using versatile cauliflower, this drool-worthy cauliflower mac and cheese is diet-friendly while still satisfying the same cheesy, melty craving. Tender-crisp roasted cauliflower is coated in a simple cheese sauce of cheddar, cream cheese, milk, and spices. Dijon mustard adds a nice kick of flavor without overwhelming the dish. Topped with a sprinkling of parmesan and baked, it comes out bubbling and lightly browned on top. Broil it for a minute or two if you like the top extra toasty. If you're not eating gluten-free or keto, you can add a topping of melted butter and breadcrumbs for an extra crunch.