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Microwave Tuna Casserole

My family digs into this moist, flavorful tuna casserole. Crisp celery along with zucchini and tomato give it a fresh twist. When I get home from work and we have to be somewhere else in 90 minutes, this is the recipe I rely on.
  • Total Time
    Prep/Total Time: 20 min.
  • Makes
    6 servings


  • 1/2 cup sour cream
  • 1/2 cup mayonnaise
  • 2 teaspoons prepared mustard
  • 1/2 teaspoon salt
  • 1/2 teaspoon dried thyme
  • 1/4 teaspoon dill weed
  • 5 cups cooked egg noodles
  • 2 cans (6 ounces each) tuna, drained and flaked
  • 1/2 cup chopped celery
  • 1/3 cup sliced green onions
  • 1 small zucchini, sliced
  • 1 cup shredded cheddar cheese
  • 1 medium tomato, chopped


  • In a small bowl, combine the first six ingredients; mix well. In a large bowl, combine noodles, tuna, celery and onions. Stir in the sour cream mixture. Spoon half into a greased 2-qt. microwave-safe dish; top with half of the zucchini. Repeat layers.
  • Microwave, uncovered, on high for 4-6 minutes or until heated through. Sprinkle with cheese and tomato. Microwave, uncovered, 1 minute longer. Let stand for 3 minutes before serving.
Nutrition Facts
1 cup: 407 calories, 25g fat (9g saturated fat), 79mg cholesterol, 554mg sodium, 27g carbohydrate (3g sugars, 2g fiber), 17g protein.

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  • knollbrookcook
    Sep 25, 2018

    This turned out quite well and very tasty. I was unsure how we would like the dill flavour but it was good, not too powerful. I omitted the salt, used plain yogurt instead of sour cream and I did use light mayonnaise and it worked fine for me. Will make again for sure!!!

  • sonyabd
    Jul 19, 2013

    wonderful recipe. I have used greek yogurt in place of mayo and fresh dill and basil for spices. Kids love it and it is one of our fav recipes

  • Lynne415
    Apr 4, 2011

    I have been making this recipe since I first found it a few years ago. It's easy to make and very tasty! Love the addition of the zuchini in the dish. I it most of the time as written. I have sometimes added more cheese, but that's a personal preferance of my family. THANKS for sharing the is excellent!

  • Anonymous
    Jun 5, 2007

    No comment left