Last time I had tuna, I had it as a sweet potato tuna melt. I mixed the tuna with cottage cheese and salsa, put it on top of half a baked sweet potato, topped it with mozzarella, and then broiled it for a few minutes.
This sounds really interesting! I have a recipe for black bean and sweet potato burritos that sounds like an odd combination (black beans, sweet potatoes, a bit of peanut butter and spices, with cilantro and salsa in a tortilla) but is delicious. And I think the same principal is likely going here. I am going to try this one.