Incredible Low Carb Tuna Pie Recipe

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Low carb tuna pie recipe
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Here is a recipe for an incredible low-carb tuna pie recipe made with cheese, green beans, and low-carb flour. Creamy and filling, this tuna fish pie makes a great dinner dish!

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Canned tuna is one of the most affordable protein options on the keto diet. Even if you don’t think you are a huge fan of canned tuna, you’ll love this pie. The filling and crust totally improve the tuna taste.

This recipe reminds me of my favorite tuna pot pie recipe. I changed it up and gave it a crumby topping instead of a traditional pie crust. It’s both gluten-free and low in carbs. Plus, it’s just so wonderful to be able to enjoy a pot pie on a low-carb diet.

And, not to mention, it’s both super-easy to make and it’s budget-friendly too!

For anyone that is looking for delicious and different fish recipes to make during Lent, save this one! It’s basically comfort food on a keto diet – it’s that good.

Ingredients Needed For Tuna Pot Pie

If you have ever baked keto-friendly recipes before, you probably already have everything you need to make this dish. If not, they are easy to find at the store.

Low-Carb Flours

You can either use Carbquik (or almond flour) and then add in some coconut flour. When you use both almond and coconut flour together, you will create the perfect texture for the pie crust.

Dairy Products

The creamy sauce is made with lots of dairy. I used a combination of cheddar cheese, butter, and sour cream. The sour cream gives it a fantastic tartness and keeps it from tasting too rich.


This is where you can really customize how your tuna pie tastes. The only spices I used are salt and paprika. If you want it to have a bolder taste, sprinkle in some garlic powder.


It’s really easy to use canned tuna in this recipe! If you prefer fresh tuna, then cook some up and use that instead. This recipe is pretty flexible, and either option will work.


The eggs bind all the sauce ingredients together and help them bake up in a thicker and richer way.


Mayo is a regular part of traditional tuna casserole. I’ve heard of people replacing it with plain Greek yogurt. If you do, it will alter the flavor slightly and change how many carbs this recipe has.


I used green beans for the veggies. Either canned, fresh, or frozen will all work perfectly in this recipe.

For the onion, save time and use minced dry onion or even frozen diced onion. Of course, fresh onion will work too, but it just takes longer to cut up.

Please note: Check out the recipe card at the bottom for a full list of ingredients used to make this low-carb recipe.

Quick Tips:

  • If you want the crumb topping to be even crispier, sprinkle some shredded parmesan cheese on top during the last 5 minutes of baking.
  • Try this recipe with canned chicken! It will still taste just as delicious.
  • They might have a few more carbs, but replace the green beans with peas to change up the texture and taste.
  • Let the hot tuna pie sit for several minutes before slicing. This helps the slices hold together better as well.

How To Make A Low Carb Tuna Pie

All of the exact steps are listed in the printable recipe card at the bottom of this post. First, here are some photos and extra tips for each part of the process.

Make The Low-Carb Pie Crust

To start, you’ll combine the flours, one cup of cheese, salt, and paprika in a medium bowl. Then, cut the butter in using a pastry blender.

Reserve one cup of the pastry mixture. You will use this as the topping for the pie later. Press the remaining dough into a pie pan.

tuna pie crust

Add Tuna And Veggies

Place the tuna and green beans into your pie crust.

tuna green bean pie filling

Make The Cream Sauce

In another bowl, mix the eggs until light and fluffy. Then, mix in the sour cream, the remaining cheese, mayonnaise, and onion. Pour this mixture over the tuna and green beans.

making and adding the cream sauce to filling

Add The Pie Crust To The Top

Finally, sprinkle the reserved pastry mixture over the top of your pie. Bake it until the top is browned and the pie has risen.

baked tuna pie

What To Serve With Keto Tuna Pot Pie

This is pretty much an entire meal in one dish! You have protein and veggies in a rich and creamy sauce. To round this out and make it feel like a filling main course, start out with your favorite salad.

This baby kale and avocado salad has parmesan cheese and is light enough to compliment this seafood pie.

Want something sweeter to offset the savory? Make a spinach strawberry salad with a tangy vinaigrette. You can’t go wrong with spinach and strawberries.

Frequently Asked Questions About Tuna Pie

Here are some questions people often ask about this recipe.

Don’t have any questions? Scroll down to the printable recipe card and start cooking.

Is Carbquik gluten-free?

No, it is not gluten-free. If you need a gluten-free option, I suggest replacing it 1:1 with almond flour.

How do you store tuna pie leftovers?

Store leftovers in the refrigerator in an airtight container. Alternatively, you can wrap the pie plate tightly with plastic wrap before refrigerating. It won’t last too long, so try to eat it within 2-3 days.

How do you make this into a tuna casserole?

I’m a huge fan of tuna! In fact, I have two delicious tuna casserole recipes you should try. My low-carb tuna casserole has spinach in it, so it’s a fantastic source of iron.

If you like mushrooms, then make shirataki tuna noodle casserole. It’s creamy and has a deep flavor that you’ll really enjoy.

Can I make this spicier?

Yes, you can! In fact, it is really easy. Just sprinkle as much red pepper flakes as you want into the sauce. You can also try adding some sliced jalapeno peppers into the recipe as well.

Is canned tuna safe to eat?

If you are worried about tuna being contaminated from radiation from Fukushima, you can read more about that in this article. Personally, I think those not using responsible fishing methods are more of an issue.

serving tuna pie

This tuna dish was also very delicious reheated in the microwave. I hope that you enjoy it as much as we do!

I usually keep cans of tuna fish in the pantry, so the ingredients for this tuna pie are usually on hand in my kitchen. Use up any ingredients that are in your kitchen too.

I just know you are going to really enjoy this easy and delicious tuna pot pie! Be sure to let me know what you think in the comments below.

More Low Carb Seafood Recipes

If you enjoyed this tuna pie, then here are some more low-carb seafood recipes you should make next. They are some of my favorites!


tuna pie featured

Incredible Tuna Pie – Low Carb

Author: Lisa MarcAurele

.wprm-recipe-rating .wprm-rating-star.wprm-rating-star-full svg * { fill: #713239; }

4.75 from 4 votes

A savory low carb pie that made with tuna, cheese, green beans, and low carb flour. Creamy and filling, this tuna fish pie makes a great main dish.

Recipe Video (Click on Image to Play)

Prep Time10 mins

Cook Time40 mins

Total Time50 mins

Course: Main Course

Cuisine: American

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Servings 8 people
Calories 401



  • In a medium bowl, combine the Carbquick, coconut flour, 1 cup cheese, salt and paprika. Using a pastry blender, cut the butter into the flour mixture. Reserve one cup of mixture to put on top. Press the remaining mixture on the bottom and up the sides of a pie pan. Arrange the drained tuna and green beans on top of the crust.

  • In another clean bowl, beat the eggs with a mixer until they are light and fluffy. Stir in sour cream and the remaining half cup cheese, mayonnaise, and dry onion. Pour over tuna and sprinkle with the reserved crumb mixture.

  • Bake pie in 350 degree F oven for 35 to 40 minutes or until top is browned and pie has risen.

  • Let stand for 15 minutes before cutting and serving.


If you want the crumb topping to be even crispier, sprinkle some shredded parmesan cheese on top during the last 5 minutes of baking.
Try this recipe with canned chicken! It will still taste just as delicious.
They might have a few more carbs, but replace the green beans with peas to change up the texture and taste.
Let the hot tuna pie sit for several minutes before slicing. This helps the slices hold together better as well.

Low Carb Sweeteners | Keto Sweetener Conversion Chart

low carb yum 5-ingredient keto


Calories: 401 | Carbohydrates: 5g | Protein: 30g | Fat: 28g | Saturated Fat: 28g | Polyunsaturated Fat: 4g | Cholesterol: 120mg | Sodium: 661mg | Potassium: 103mg | Fiber: 2g | Sugar: 1g | Vitamin A: 800IU | Vitamin C: 1.7mg | Calcium: 240mg | Iron: 2.2mg

Additional Info

Net Carbs: 3 g | % Carbs: 3.1 % | % Protein: 31.3 % | % Fat: 65.6 % | SmartPoints: 17


( [calories] => 401 [carbohydrates] => 5 [protein] => 30 [fat] => 28 [saturated_fat] => 28 [polyunsaturated_fat] => 4 [cholesterol] => 120 [sodium] => 661 [potassium] => 103 [fiber] => 2 [sugar] => 1 [vitamin_a] => 800 [vitamin_c] => 1.7 [calcium] => 240 [iron] => 2.2


My Top 5 Secrets to Master Keto!

Note on Nutritional Information

Nutritional information for the recipe is provided as a courtesy and is approximate only. We cannot guarantee the accuracy of the nutritional information given for any recipe on this site. Erythritol carbs are not included in carb counts as it has been shown not to impact blood sugar. Net carbs are the total carbs minus fiber.

Unauthorized use of this material without written permission from Lisa MarcAurele is strictly prohibited unless for personal offline purposes.
Single photos may be used, provided that full credit is given to along with a link back to the original content.

First published on April 21, 2011. Post updated on July 22, 2021, with clearer images and additional recipe information.


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