Heptadecagon

If someone asked you why you cooked each day, what would you say? I'd say that I cook so we can eat. That's the answer, plain and simple. Most of the time, I don't enjoy cooking. But if I don't cook, I'll have four hungry children on my hands, and someone would call social services on me. So what I normally cook--relatively healthy menus--are largely unimaginative recipes meant to fill our bellies and leave enough leftovers so I don't have to cook the next day. (See, there is a method to my madness.) Every once in a while, though, I cook because I want to. Say, for a birthday. Well today is one of those days. Dear old Timmy turns 44. Where did the time go? And since he never complains about my cooking (or lack thereof), I decided to make one of the meals he enjoys. It's a party for the palate, aptly named Fiesta Casserole, and found between the pages of Maryana Vollstedt's The Big Book of Casseroles . Ingredients: 1 Tbsp oil 1 yellow onion, choppe...