Note from Erin of Ohio: “I made this dish not expecting it to taste very savory, but boy was I wrong! The seasonings (cayenne pepper, etc) really made this dish stand out and the tomatoes on top of the casserole were suprisingly tasty! I added just a little sprinkle of cheese on the very top of the dish to cover the tomatoes slightly. I also used unsalted butter and it tasted just as good as with salted butter. By the end of dinner that night, there were no leftovers, and my family is really picky about what they eat.
1. Preheat oven to 375 degrees F. Melt butter in a saucepan. Blend in flour, 1/4 teaspoon salt, and pepper. Stir in evaporated milk. Cook until thickened, stirring constantly; stir in grated cheddar cheese and grated parmesan cheese.
2. Combine instant rice, chopped parsley, paprika, cayenne pepper, oregano, and 1/2 teaspoon salt. Layer whole tomatoes, chopped onion, and tuna (drained) over the rice.
3. Bake for 15 to 20 minutes, or until the rice is tender.