Gluten Free Tuna Casserole

Name: Gluten Free Tuna Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: American
Ingredients: 2 cans of tuna, drained; 1 cup gluten-free pasta; 1 cup frozen peas; 1 cup mushrooms, sliced; 1 can cream of mushroom soup (gluten-free); 1 cup shredded cheddar cheese; 1/2 cup milk; 1/2 teaspoon garlic powder; 1/2 teaspoon onion powder; Salt and pepper to taste; 1/2 cup gluten-free breadcrumbs (optional, for topping)

Author: lia

Published: April 27, 2026

A delicious gluten free tuna casserole served in a baking dish.

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why make this recipe

Gluten Free Tuna Casserole is a comforting dish that brings back memories of family dinners. It’s easy to make, quick to prepare, and delicious—a true crowd-pleaser! This recipe is perfect for those who need to avoid gluten but still want to enjoy a hearty meal. Packed with protein from the tuna and nutrients from the vegetables, this casserole provides a balanced meal for everyone.

how to make Gluten Free Tuna Casserole

Ingredients :

2 cans of tuna, drained
1 cup gluten-free pasta
1 cup frozen peas
1 cup mushrooms, sliced
1 can cream of mushroom soup (gluten-free)
1 cup shredded cheddar cheese
1/2 cup milk
1/2 teaspoon garlic powder
1/2 teaspoon onion powder
Salt and pepper to taste
1/2 cup gluten-free breadcrumbs (optional)

Directions :

Preheat the oven to 350°F (175°C).
Cook the gluten-free pasta according to package instructions and drain.
In a large mixing bowl, combine the drained tuna, cooked pasta, peas, mushrooms, cream of mushroom soup, cheddar cheese, milk, garlic powder, onion powder, salt, and pepper.
Pour the mixture into a greased baking dish and evenly spread.
If desired, sprinkle gluten-free breadcrumbs on top for added crunch.
Bake in the preheated oven for 25-30 minutes or until bubbly and golden.
Let cool for a few minutes before serving. Enjoy!

how to serve Gluten Free Tuna Casserole

Serve the casserole warm right out of the oven. It pairs well with a simple green salad or some steamed vegetables. You can also top it with fresh herbs like parsley or chives for extra flavor and color.

how to store Gluten Free Tuna Casserole

If you have leftovers, let the casserole cool completely before storing it. Place it in an airtight container and keep it in the refrigerator for up to three days. You can also freeze it for longer storage. Just ensure it is well-wrapped to avoid freezer burn.

tips to make Gluten Free Tuna Casserole

For added flavor, consider including some diced onions or garlic in the mixture.
If you love spice, add some red pepper flakes or hot sauce to the mix before baking.
Feel free to swap out vegetables based on what you have on hand—broccoli or bell peppers work great too!

variation (if any)

You can easily make this casserole dairy-free by using a dairy-free cream of mushroom soup and substituting the cheese with a dairy-free alternative. This makes it suitable for those with lactose intolerance.

FAQs

Can I use fresh tuna instead of canned?

Yes, fresh tuna can be used, but it should be cooked and flaked before adding it to the casserole.

Is there a vegan option for this recipe?

Yes, you can replace the tuna with chickpeas or a plant-based tuna substitute and use vegan cream of mushroom soup and dairy-free cheese.

Can I make this ahead of time?

Absolutely! You can prepare the casserole a day in advance and store it in the refrigerator before baking. Just be sure to adjust the baking time as needed.