when i saw this recipe in the new spanish table, there was no picture, so although the title was "empanada with tuna and melting onions", i thought i was making empanadas, as in multiple small pastries. of course, we had to make it-tuna, lots of delicious veggies, and "melting onions" (what a delectable way to describe it! they were carmelized) all baked inside a warm, golden brown crust.
obviously, this was at home, over last winter break, and not in a dorm room on a hot summer day. anyway, turns out, it was one giant empanada, as i'm sure you've concluded based on the photographic evidence. so we sliced it like a pie, and enough leftovers for the next day (i think it made 6 or 7 meals total. 5 if you're really hungry). yum!