Fun fact: This should make you feel pretty good about making this meal. Just for fun and out of curiosity, I plugged in "rigatoni" instead of "cauliflower" into my nutrition calculator for this dish, and instead of the 12 grams of carbs per serving, it rocketed up to 66 grams of carbohydrates! That's in one serving! For some people on keto, that would be way over their daily limit of carbs. So feel good about choosing this delicious version of the casserole instead!