By Wendy Stoltz / Last Modified On April 5, 2023

This easy gluten-free tuna casserole recipe is perfect for a busy weeknight dinner or a cozy weekend meal. Packed with tender pasta, creamy mushroom sauce, flavorful tuna, and sweet peas, this casserole will be a hit with everyone. With simple ingredients and easy preparation, this recipe is a great way to get a satisfying and comforting meal on the table in no time.

With a focus on simplicity, these gluten-free casserole dishes are easy to prepare using simple ingredients. This gluten-free breakfast casserole is packed with protein and flavor, making it an ideal way to start your day, while this gluten-free chicken casserole is a hearty and comforting dinner option. Gluten-free green bean casserole is a classic side dish that is perfect for family gatherings and holidays.

Most dishes require gluten-free cream of mushroom soup master this so you can use this versatile and flavorful base for many different recipes.

If you love tuna as we do, then try this tuna salad with Greek yogurt is a healthy twist on a classic favorite.

Looking to enhance your gluten-free cooking skills? Check out Udemy's Gluten-Free Cooking Courses and take your culinary expertise to the next level!

Gluten-Free Tuna Casserole Recipe

This gluten-free tuna casserole recipe is a great way to eat a healthy and balanced meal. The dish contains nutrients, including protein from the tuna and peas and complex carbohydrates from the pasta. The mushroom sauce adds a creamy and savory flavor, while the onions and breadcrumbs give the casserole a nice crunch.

This tuna casserole recipe is also a versatile dish that can be customized to suit your taste preferences, from the protein choices to the veggies you add. If you're feeling adventurous, you can add spices like paprika or garlic powder for an extra burst of flavor.

Overall, this easy tuna casserole recipe is a great option if you're looking for a satisfying, healthy, and delicious meal. Whether you're feeding your family on a busy weeknight or hosting a cozy weekend dinner party, this casserole will surely be a crowd-pleaser.

Why You’re Going to Love This Gluten-Free Tuna Casserole

Easy to make - This gluten-free tuna casserole recipe is simple and easy to prepare, making it a perfect go-to meal for busy weeknights.

Delicious flavor - The combination of tuna, mushroom soup, peas, and cheddar cheese creates a mouth-watering flavor that the whole family will enjoy.

Versatile dish - This casserole includes vegetables, lean protein from tuna, and healthy fats from cheese, making it a balanced meal. But you can also swap out the protein and veggies to make other meal options. Add it to your meal rotations weekly. It is so good!

Leftovers - This casserole reheats well, making it a great option for meal prep or leftovers for lunch the next day.

Ingredients in Gluten-Free Tuna Casserole

Raw pasta - Gluten-free pasta is the base ingredient for the recipe and provides the main source of carbohydrates. It is cooked in salted water until al dente and mixed with other ingredients to make the casserole.

Salt and pepper - These ingredients add flavor to the dish.

Butter - Frying the onion in butter adds richness and flavor to the dish.

Canned tuna - This provides a good source of protein and omega-3 fatty acids. Scroll down for some recommended gluten-free tuna.

Peas - Peas add nutrition and texture, and color to the dish.

Onion - This is fried in butter to add flavor to the dish.

Broth - This is added to provide moisture to the dish and adds flavor.

Gluten-free mushroom soup - The creamy sauce provides additional flavor. Use my gluten-free mushroom recipe to make your own from scratch. 

Panko breadcrumbs - These gluten-free panko breadcrumbs are used as a topping for the casserole and add crunchiness.

Grated cheddar - Cheese is added as a topping for the casserole and adds flavor and creaminess to the dish. Try grating it from scratch and not buying the shredded version. It has other additives which make it not melt as well.

Parsley - Garnish the dish with parsley if you like.

Equipment Needed for This Gluten-Free Tuna Casserole

Large pot - Use a large pot for boiling the pasta until al dente.

Colander - Use a colander to drain the pasta.

Skillet - Have a skillet for frying the onion.

Mixing bowl - Use mixing bowls to mix the ingredients.

Baking dish  - I have used a 9x13 baking dish for baking the casserole.

If you have any questions about making Gluten-Free Tuna Casserole, please leave a comment, and we will get back to you as soon as possible.

How to Make Gluten-Free Tuna Casserole

1. Cook pasta in salted water until al dente. Drain the water. Preheat the oven to 360F.
2. Fry the onion in butter for 4-5 minutes on low heat, stirring occasionally.
3. Place boiled pasta in a bowl. Add tuna, peas, and fried onions.
4. Add salt and pepper, mushroom soup, broth, and half of the grated cheddar.
5. Mix everything thoroughly.
6. Transfer to a baking dish and flatten the casserole.
7. Top with remaining cheese and sprinkle with panko. Bake for 20 minutes. Cut the tuna casserole into portions and serve with parsley.

Tips for Making the Best Gluten-Free Tuna Casserole

Cook the pasta al dente - This will prevent the pasta from becoming mushy when baked in the casserole.

Mix the ingredients thoroughly - Make sure they are well combined before transferring them to the baking dish.

Use a large enough baking dish - Using a smaller dish may cause the casserole to overflow while baking.

Top with breadcrumbs and cheese - This will add a crispy texture and delicious flavor to the casserole.

Let it rest before serving - Allowing the casserole to rest for 5-10 minutes before serving will make it easier to cut and serve.

Frequently Asked Questions

How Do I Store Gluten-Free Tuna Casserole?

Allow the gluten-free tuna casserole to cool down to room temperature, and then cover it with plastic wrap or a tight-fitting lid. You can then store it in the refrigerator for up to 3-4 days.

Can I Freeze Gluten-Free Tuna Casserole?

Yes, you can freeze gluten-free tuna casserole. Allow the casserole to cool down to room temperature and then transfer it to a freezer-safe container or a Ziploc bag. Make sure to remove as much air as possible before sealing. It can be stored in the freezer for up to 3 months.

Can You Make This Gluten-Free Tuna Casserole Ahead of Time?

Yes, you can prepare the gluten-free tuna casserole ahead of time. Simply follow the recipe instructions and then transfer the unbaked casserole to the refrigerator for up to 24 hours.

What Substitutions / Replacements Can I Make in This Gluten-Free Tuna Casserole?

Veggies - You can use different vegetables like carrots, spinach, or broccoli instead of peas.

Cheese - Use a different type of cheese instead of cheddar. If you are lactose intolerant or vegan, you can use dairy-free cheese such as vegan cheddar or mozzarella.

Pasta - You can use pasta of your choice or experiment with other types of pasta such as chickpea, lentil, or quinoa pasta. Not sure which pasta to use? View our best gluten-free pasta brands.

Protein - If you don't like tuna, you can use canned salmon or chicken as a substitute. For a vegetarian option, you can use chickpeas or white beans.

Breadcrumbs - You can use gluten-free cornflakes or crushed gluten-free crackers if you don't have gluten-free panko crumbs.

How Many Days Is Gluten-Free Tuna Casserole Good For?

This gluten-free tuna casserole can be stored in the refrigerator for up to 3-4 days after it has been prepared. Make sure to store it properly in an airtight container or cover it with plastic wrap to prevent contamination.

Do You Eat Gluten-Free Tuna Casserole Hot Or Cold?

Gluten-free tuna casserole is usually served hot, right out of the oven. However, you can also eat it cold if you prefer, especially as leftovers. Simply heat it up in the microwave or oven before serving.

Which Tuna Is Gluten-Free?

Most types of tuna are naturally gluten-free. However, it is important to check the label and ingredients list of canned tuna to ensure it does not contain any gluten-containing ingredients. In addition, some flavored or seasoned varieties of tuna may contain gluten, so it's important to read the labels carefully.

Here are a few that are deemed gluten-free, but products can change, so consult the ingredient list every time as I do!

• Wild Planet Wild Albacore Tuna
• Safe Catch Elite Tuna
• Bumble Bee Solid White Albacore Tuna
• Genova Yellowfin Tuna
• Crown Prince Natural Solid White Albacore Tuna

Continue to Content

Yield: 4-5 servings

Gluten-Free Tuna Casserole

Print

This easy gluten-free tuna casserole recipe is perfect for a busy weeknight dinner or a cozy weekend meal. Packed with tender pasta, creamy mushroom sauce, flavorful tuna, and sweet peas, this casserole will be a hit with everyone.

Prep Time 5 minutes

Cook Time 50 minutes

Total Time 50 minutes

Ingredients

• ⅔ cup raw, gluten-free pasta
• ½ tsp salt
• ⅕ tsp pepper
• 1 tbsp butter
• 2 cans of tuna drained
• ½ cup peas
• 1 onion chopped
• ½ cup broth
• ½ can of gluten-free mushroom soup
• ⅓ cup gluten-free panko breadcrumbs
• 1 cup grated cheddar
• parsley for serving

Instructions

1. Cook pasta in salted water until al dente. Drain the water. Preheat the oven to 360F.
2. Fry the onion in butter for 4-5 minutes on low heat, stirring occasionally.
3. Place boiled pasta in a bowl. Add tuna, peas, and fried onions.
4. Add salt and pepper, mushroom soup, broth, and half of the grated cheddar.
5. Mix everything thoroughly.
6. Transfer to a baking dish and flatten the casserole.
7. Top with remaining cheese and sprinkle with panko. Bake for 20 minutes. Cut the tuna casserole into portions and serve with parsley.

Notes

• I have used a 9x13 baking dish for baking the casserole.

Recommended Products

As an Amazon Associate and member of other affiliate programs, I earn from qualifying purchases. They never cost you extra.

• 
  Genova Premium Yellowfin Tuna in Water, Wild Caught, Solid Light, 5 oz. Can (Pack of 12)
• 
  Bumble Bee Solid White Albacore Tuna in Water 5 oz Can (Pack of 8) - Wild Caught Tuna - 29g Protein per Serving - Non-GMO Project Verified Gluten Free Kosher - Great for Tuna Salad & Recipes
• 
  Kikkoman Panko Slyte Coating Gluten Free, natural, 8 Ounce
• 
  Jovial, Pasta Farfalle Brown Rice Organic, 12 Ounce
• 
  HexClad 10 Quart Hybrid Stainless Steel Stock Pot with Glass Lid Stay Cool Handles, Non-Stick PFOA Free, Dishwasher, Oven Safe, Works on Induction, Ceramic and Gas Cooktops - Soups, Stews, Seafood
• 
  HiramWare Stainless Steel Colander With Handle and Legs, Large Metal Green Strainer for Pasta, Spaghetti, Berry, Veggies, Fruits, Noodles, Salads, 5-quart 10.5” Kitchen Mesh Colander, Dishwasher Safe
• 
  SENSARTE Nonstick Frying Pan Skillet, Swiss Granite Coating Omelette Pan, Healthy Stone Cookware Chef's Pan, PFOA Free (8/9.5/10/11/12.5 Inch) (9.5 Inch)
• 
  PYREX 3QT Glass Baking Dish with Blue Cover 9" x 13" (Pyrex)
• 
  Pyrex Smart Essentials 3-Piece Prepware Mixing Bowl Set

Nutrition Information:

Yield:

5

Serving Size:

1
Amount Per Serving: Calories: 443Total Fat: 14gSaturated Fat: 7gTrans Fat: 0gUnsaturated Fat: 5gCholesterol: 45mgSodium: 927mgCarbohydrates: 53gFiber: 4gSugar: 6gProtein: 26g

This nutrition info is based on the exact ingredients and brands used at the time. It may not be 100% accurate. Please check your ingredients nutrition labels.