There’s nothing more satisfying than taking a big bite out of a cheesy casserole. If this were 1957, that casserole might consist of cream of mushroom soup and some potato chips. But, it’s 2017, and now you’re more likely to find foodie-forward ingredients like truffle oil and coconut milk. When you’re constantly prepping make-ahead dinner casseroles, the more unique the recipe, the better. Spice things up with these 19 out-of-the-box recipes that you’ll *definitely* want to have leftovers of.