This recipe comes from Simply Seafood , a magazine published in Seattle in the late 70's-early 90's. Sadly, no longer in existence, it was one of the best sources of fish & seafood recipes, as well as the state of the fish industry. I've been unable to find a similar authentic recipe in any of my cookbooks, magazines, etc. I have spoken to Maltese friends who confirm the authenticity of the recipe. Maltese cuisine is influenced by Africa and, in this case, Italy. Clearly, fish and seafood play a key role in the regular meals of this island. The beauty of this recipe is that while it is described as baking, the dish starts with a relatively small amount of liquid and the tomatoes give up liquid as they soften and melt at the relatively low cooking temperature. Thus, this is more a braise than a bake and the fish retains or absorbs liquid as it cooks, thus staying moist. This is a very different style of tuna compared to the quick, high heat, seared on the outside, rare on the inside style. This recipe is quite forgiving: I have used frozen tuna steaks without defrosting them and cooked this in a slow cooker at low heat for 6 hours or at high heat for 4 hours: just add enough additional water so that the tuna stays moist. Also, if you're blessed with thick tuna steaks, whether baking or using a slow cooker, just add water as needed and keep the tuna moist until it cooks through ... Serve with a green salad and crusty bread. Wine along with the meal (or if you choose, added to the braising liquid) is a wonderful touch - for the broth, you can use either white or red. For drinking, a Sicilian wine would match the Mediterranean island origin of the dish, but anything from southern Italy would be appropriate ... In additon to being a dinner, any leftovers can be served at room temperature or heated up for lunch ... Note that since the salt and pepper are to taste , the nutritional analysis for sodium will be incorrect - if you are on a no/low/restricted salt diet, beware!!