This easy, comforting gluten-free tuna casserole is a family favorite that combines creamy cheese, savory tuna, and tender gluten-free elbow macaroni. Topped with a buttery, crispy breadcrumb crust, this casserole is the perfect weeknight dinner or make-ahead meal. Packed with protein and vegetables, it’s not only delicious but also satisfying. The recipe is simple to make, and with a few easy substitutions, it can be tailored to suit various dietary preferences, including dairy-free or vegetarian. Whether you’re looking for a quick dinner or a dish to feed a crowd, this gluten-free tuna casserole is sure to become a staple in your kitchen.

Ingredients
- 3 cans tuna, packed in water, drained
- 3 cups gluten-free elbow macaroni, cooked
- 1 tablespoon olive oil
- 1 medium onion, chopped
- 3 stalks celery, chopped
- 8 oz cream cheese
- 1 cup heavy cream
- ¼ cup chicken broth or stock
- Salt and pepper, to taste
- 1 cup grated cheddar cheese
- ½ cup grated Parmesan cheese
- 1 cup frozen mixed vegetables (peas, carrots, corn, etc.)
- ¼ cup melted butter
- 1 cup gluten-free breadcrumbs
Instructions
- Preheat the oven to 375°F (190°C). Cook the gluten-free elbow macaroni according to the package directions, drain, and place in a medium-sized bowl.
- Heat olive oil in a skillet over medium-high heat. Add the chopped onion and celery, cooking for about 4 minutes until softened. Add the cooked onion and celery to the bowl with the pasta.
- In the same skillet, reduce the heat to medium and add the cream cheese, heavy cream, and chicken broth. Stir constantly to avoid scorching. Cook until the mixture is hot and creamy, but not boiling.
- Once creamy, reduce the heat to low and stir in the grated cheddar and Parmesan cheeses. Stir until the cheese has melted and the sauce is smooth.
- Add the frozen vegetables and drained tuna to the creamy sauce mixture, stirring well to combine. Season with salt and pepper to taste.
- Pour the tuna mixture into a greased baking dish, spreading it evenly.
- In a separate bowl, combine the melted butter and gluten-free breadcrumbs. Sprinkle the buttery breadcrumb mixture evenly over the casserole. If desired, top with extra cheese for a cheesy crust.
- Bake uncovered for 20 minutes, or until the top is golden and bubbly. Remove from the oven and let cool slightly before serving.
Why You’ll Love This Recipe
This tuna casserole is a comforting, easy-to-make dish that’s perfect for family dinners. With creamy cheese, hearty pasta, and savory tuna, it’s a satisfying meal that’s sure to please everyone. It’s also gluten-free, making it suitable for those with dietary restrictions. The crispy breadcrumb topping adds a delightful crunch to every bite, making this casserole an all-around winner. Plus, it’s customizable with your favorite veggies or cheese!
Tips, Variations, and Substitutions
- Veggies: You can use any frozen veggies you like—peas, carrots, corn, or green beans all work well in this casserole.
- Cheese: Feel free to experiment with different cheeses like mozzarella, Gouda, or even a sharp blue cheese for a unique twist.
- Dairy-Free Version: For a dairy-free option, use non-dairy cream cheese, coconut milk or almond milk, and a dairy-free cheese alternative.
- Add-Ins: If you want a heartier casserole, add cooked chicken, bacon, or sautéed mushrooms for extra flavor.
- Bread Crumbs: You can use crushed gluten-free crackers or panko crumbs if you prefer a different type of topping.
FAQs
Can I make this casserole ahead of time? Yes, you can prepare the casserole in advance, cover it, and refrigerate it for up to 24 hours before baking. You may need to bake it for a few extra minutes if it’s cold from the fridge.
Can I freeze the tuna casserole? Yes, this casserole freezes well. Simply assemble it as directed, cover tightly, and freeze for up to 2-3 months. When ready to bake, thaw in the fridge overnight and bake as usual.
What can I use instead of gluten-free pasta? If you don’t have gluten-free elbow macaroni, you can use any gluten-free pasta shape you prefer, such as penne or fusilli.
Serving Suggestions
Serve this tuna casserole with a simple side salad or steamed vegetables for a complete meal. It also pairs well with a slice of crusty gluten-free bread or garlic bread. For a touch of freshness, add a sprinkle of chopped fresh parsley or chives on top before serving.
Enjoy this comforting, easy-to-make gluten-free tuna casserole as a go-to dinner for your family or guests!
Tuna Casserole Recipe
8
servings25
minutes20
minutesIngredients
3 cans tuna, packed in water, drained
3 cups gluten-free elbow macaroni, cooked
1 tablespoon olive oil
1 medium onion, chopped
3 stalks celery, chopped
8 oz cream cheese
1 cup heavy cream
¼ cup chicken broth or stock
Salt and pepper, to taste
1 cup grated cheddar cheese
½ cup grated Parmesan cheese
1 cup frozen mixed vegetables (peas, carrots, corn, etc.)
¼ cup melted butter
1 cup gluten-free breadcrumbs
Directions
- Preheat the oven to 375°F (190°C). Cook the gluten-free elbow macaroni according to the package directions, drain, and place in a medium-sized bowl.
- Heat olive oil in a skillet over medium-high heat. Add the chopped onion and celery, cooking for about 4 minutes until softened. Add the cooked onion and celery to the bowl with the pasta.
- In the same skillet, reduce the heat to medium and add the cream cheese, heavy cream, and chicken broth. Stir constantly to avoid scorching. Cook until the mixture is hot and creamy, but not boiling.
- Once creamy, reduce the heat to low and stir in the grated cheddar and Parmesan cheeses. Stir until the cheese has melted and the sauce is smooth.
- Add the frozen vegetables and drained tuna to the creamy sauce mixture, stirring well to combine. Season with salt and pepper to taste.
- Pour the tuna mixture into a greased baking dish, spreading it evenly.
- In a separate bowl, combine the melted butter and gluten-free breadcrumbs. Sprinkle the buttery breadcrumb mixture evenly over the casserole. If desired, top with extra cheese for a cheesy crust.
- Bake uncovered for 20 minutes, or until the top is golden and bubbly. Remove from the oven and let cool slightly before serving.
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