Easy dinners are even easier (and tastier) when a taco casserole is on the menu. (They're a great example of an easy Mexican casserole.) Paired with some guacamole or some jalapeño poppers as an appetizer, and a flan for dessert, you have all the makings of a fiesta. The next time you're looking for a Mexican-themed dinner, consider a chicken enchilada casserole. And the next week, what about a taco salad?