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Gluten Free Tuna Noodle Casserole

Tuna noodle casserole is an old favorite that you can enjoy gluten-free and it only takes a few more minutes to make than the condensed-soup kind.
Course Dinner
Cuisine American
Keyword easy tuna casserole, gluten free tuna pasta bake, healthy cream of mushroom soup, simple mushroom soup recipe, tuna noodle casserole from scratch
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings 6
Calories 351kcal
Author Barbara Bianchi


  • 4 tablespoons butter
  • ¾ cup thinly sliced mushrooms
  • ¼ cup diced red or green bell pepper
  • ¼ cup finely chopped onions
  • ¼ cup Bob’s Red Mill GF All Purpose Baking Flour
  • 2 ½ cups milk
  • ¾ cup grated cheddar cheese
  • Two 5-ounce cans of tuna
  • 2 cups cooked pasta. Here I used Dr. Schar TAGLIATELLE for a wide pasta which mimics wide egg noodles)
  • ¼ cup minced fresh parsley
  • Salt and pepper to taste


  • Preheat your oven to 375℉
  • Butter a 2-quart shallow baking dish. Set aside.
  • Melt butter in a 3-quart saucepan over medium heat until fragrant and bubbly. Add mushrooms, peppers, onions, and cook, stirring occasionally until tender, about 5 minutes.
    Stir in GF flour and cook for 1 minute. Remove from the heat and whisk the milk in. Return to the heat and cook, whisking, until the sauce comes to a boil and is thickened, about 10 minutes.
    Remove from the heat and add cheddar cheese, whisk until melted.
  • Drain tuna and turn into a large bowl, breaking into flakes with a fork. Stir in the hot cheese sauce, cooked pasta, parsley, salt, and pepper.
    Pour the mixture into the baking dish. Bake until bubbly and browned on top, 25 to 35 minutes. Serve and enjoy.


  • You will need 2 cups of cooked gluten free noodles for this recipe. I use Dr. Schar TAGLIATELLE for a wide pasta which mimics wide egg noodles. Go ahead with any pasta you would like.
  • This recipe is delicious with veggies added to the mix. What vegetables will you choose? Peas? Carrots? Beans? It’s up to you.
  • This recipe includes a simple cream of mushroom soup recipe. Once you know how to do this, you can use it anytime a recipe calls for cream of mushroom soup. For this reason, you may want to bookmark this recipe. 😊


Calories: 351kcal