I saw this today and had things to make it work so I figured why not... All I can say is Thank You! This was a tasty meal that was different from the norm and gave me a new way to use my tuna. (I love tuna) I didn't have an 11x7 dish but an 8x8 is the equivalent. I used a four cheese blend instead of cheddar because it was already shredded and I used a parm/asiago/romano shredded blend as well. I used a medium onion, added an extra can of tuna, was a little more liberal with the spices and sliced up a 26 oz can of whole tomatoes. the rice was tender and the top was oh so pretty when it came out of the oven after 23 minutes. The 'cheese sauce' was almost like a cream of onion cheese soup from scratch... nice very nice, Thanx again for posting.