This is one of the easiest recipes I have ever seen and it's soooooo good.
Use a 9 x 13 pan, 3 cans of drained tuna, 2 cans of mushroom soup, and crushed potato chips.
Layer 2 cans tuna, crushed chips to cover (no set amount, I cover it so I can't see the tuna much) and cover with a can of soup. Then layer the rest of the tuna, more chips, and the other can of soup. Bake at 350 until golden brown on top, about 40 minutes.