When I think of a traditional tuna melt, I remember the crisp buttered bread, ooey gooey cheese, and tuna that is sopping wet with mayo. I lightened up this sandwich and made it a little more diet friendly. Using the ingredients I had on hand, this open-faced sandwich turned out to be 150 calories, 11 carbs, 17 grams protein, and 4 grams of fat.
