Of course, my one error (okay I admit it, the first of two) was that the recipe called for "day-old" bread. But if you don't have bread, what do you do? All bread at the grocery store is at least a day old, but it's meant to last until the due date so is it really as "day-old" as it needs to be? I finally settled on a French loaf that felt slightly crustier than I otherwise would've been happy with if I'd wanted baked-fresh-today bread. I figured it would have to do. The other mistake was that even though I'd written down that I had to buy cream, I forgot, so I had to improvise with skim milk I had in the fridge. But that just made it healthy, right?
It turned out just fine (how can a casserole NOT turn out, really? It's not like it has any sort of shape to start with, but whawtever). I loved it (what's not to love about bread and cheese melted together?) and took about 10 minutes to make. AND you can make it the day before and just cook it right before you want to serve it. So why does anyone make quiche instead of strata?
And then it dawned on me.