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Mozzarella Tuna Melts

While the soup simmers, Jo assembles tasty Mozzarella Tuna Melts. "Our daughter's home economics teacher shared the recipe for these all-American favorites," she notes. Using a mini food processor to chop the celery and onion for the filling helps shave preparation time. Then Jo just pops the sandwiches in the oven.
  • Total Time
    Prep/Total Time: 30 min.
  • Makes
    4 servings


  • 1 can (6 ounces) water-packed tuna, drained and flaked
  • 1/4 cup finely chopped celery
  • 1/4 cup finely chopped onion
  • 1/4 cup fat-free mayonnaise
  • 4 hamburger buns, split
  • 4 slices part-skim mozzarella cheese
  • 4 tomato slices
  • 4 lettuce leaves


  • In a small bowl, combine the tuna, celery, onion and mayonnaise. Spread on bottom of buns; set bun tops aside. Top tuna mixture with a slice of cheese and tomato.
  • Place on an ungreased baking sheet. Bake, uncovered, at 350° for 12-15 minutes or until heated through and cheese is melted. Top each with a lettuce leaf; replace bun tops.
Nutrition Facts
1 each: 272 calories, 8g fat (4g saturated fat), 28mg cholesterol, 648mg sodium, 27g carbohydrate (0 sugars, 2g fiber), 23g protein. Diabetic Exchanges: 3 lean meat, 2 starch.
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Average Rating:
  • Qwertio
    May 5, 2014

    These are phenomenal. A great quick supper. I had 5oz cans of tuna, so I used two and slightly increased the mayo. I also added a diced dill pickle spear. Like others, I left off the tomato, just because I wasn't in the mood for it. :-) Awesome!

  • blasphemous.redhead
    Feb 8, 2013

    No comment left

  • LibbiPeach
    Jul 31, 2011

    I don't typically like tuna salad sandwiches, but this one is nice and fresh and pleasing. I leave the tomato off of part of them in the cooking as my husband doesn't like "cooked" tomatoes, but i do. I've made this one several times now. Another nice and quick, yet pleasing dish.

  • LAdussen
    Jun 17, 2011

    So easy and delicious! The whole family loves this recipe.

  • LizCav
    Jun 15, 2010

    Nice easy dinner. I left out the tomato, but it's a great simple summer meal.

  • Devonna
    Sep 21, 2009

    No comment left

  • GailJay
    Apr 28, 2009

    No comment left

  • muzacgurl88
    Aug 9, 2007

    No comment left