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This comforting dairy-free Healthy Tuna Noodle Casserole is made decadently creamy with cashews! Just as satisfying as the original, it's the ultimate weeknight dinner!

Healthy Tuna Noodle Casserole

  • Author: Alexis | Hummusapien
  • Prep Time: 20 mins
  • Cook Time: 25 mins
  • Total Time: 40 mins
  • Yield: 6-8 1x
  • Category: Main Meals
  • Method: Oven
  • Cuisine: American


This comforting dairy-free Healthy Tuna Noodle Casserole is made decadently creamy with cashews. Just as satisfying as the original, it’s the ultimate weeknight dinner!



  • 12 oz whole wheat egg noodles, fusilli, or pasta of choice
  • 1/2 cup raw cashews
  • 3 tbsp butter or extra virgin olive oil
  • 1 large onion, diced
  • 2 stalks celery, finely diced
  • 4 cloves garlic, minced
  • 8oz sliced baby bella mushrooms
  • 2 tbsp whole wheat flour
  • 1/4 cup nutritional yeast (optional)
  • 1 1/2 cups frozen peas
  • 25oz cans tuna, drained (I like Wild Planet or Safe Catch)
  • 1 1/2 tsp sea salt
  • lots of freshly ground black pepper
  • 1/3 cup breadcrumbs


  1. Cook noodles in a large pot of salted water until just al dente. Drain and set aside. While pasta boils, place cashews in a small bowl and cover with hot water.
  2. Melt butter/oil in a large deep skillet or Dutch oven over medium heat. Add onion, celery, and a good pinch of salt and pepper. Cook until soft, about 5-7 minutes. Add mushrooms and garlic and cook for another 5 minutes. Stir in flour and cook for another minute.
  3. Preheat oven to 350° F. Spray a 9×13 inch baking dish with cooking spray. Drain cashews and place in blender with 2 1/2 cups water (I used my Nutribullet). Blend until completely smooth and creamy.
  4. Pour in cashew cream and nutritional yeast and whisk well. Once mixture starts to simmer, add peas, salt and pepper. Cook for 5 minutes, stirring often, until mixture has thickened. Stir in drained tuna and noodles. Taste and adjust salt and pepper.
  5. Pour into baking dish. Top with breadcrumbs and a pinch of salt and pepper. Spray top with cooking spray and bake for 25 minutes. Enjoy hot with Frank’s hot sauce! Store in an air-tight container in the refrigerator for up to five days.


This casserole can be frozen! If you’re planning to freeze, follow the recipe except for the topping. Place in a freezers-safe dish like this one and let it cool completely. Cover and freeze. To reheat, let it thaw overnight in the refrigerator. Top with breadcrumbs and bake per the recipe.