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Keto Tuna Casserole {Ready in About 20 Minutes!}

This Keto Tuna Casserole is comforting, warming, and so easy to make. It’s tuna noodle style with the help of keto noodles and is ready in just over 20 minutes!

overhead view of keto tuna casserole in a casserole dish

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This Keto Tuna Noodle Casserole will remind you of classic tuna noodle casserole with only a fraction of the carbs! Thanks to keto noodles, it really does have a noodle base just like the original. The noodles and tuna are tossed in a creamy, cheesy sauce alongside just a small amount of peas and carrots – not enough to boost the carb count, but just enough to give it that classic tuna noodle casserole flavor.

Why You’ll Love This Keto Tuna Casserole

  • It’s ready in just over 20 minutes, perfect for those busy weeknights.
  • It may be a keto recipe, but it has all the flavors of classic tuna noodle casserole.
  • Each serving is packed with 17g protein.
  • It’s super low-carb with only 3g net carbs per serving!

Ingredients Needed to Make This Easy Low Carb Tuna Casserole

Ingredient quantities for this low carb tuna casserole recipe are located in the recipe card at the end of the post.

  • Olive oil
  • Carrots
  • Almond flour
  • Unsweetened almond milk
  • Heavy whipping cream
  • Dijon mustard
  • Garlic powder
  • Salt and pepper
  • Cayenne pepper (optional)
  • Cream cheese
  • Frozen peas
  • Canned tuna
  • Fettuccine shirataki noodles
  • Shredded Parmesan cheese
  • Pork rinds

How to Make Gluten Free Tuna Casserole {Quick Overview}

This is just a quick overview of some of the steps involved in making the gluten free tuna casserole with noodles. For the recipe in detail, including exact measurements used at each step, scroll to the recipe card at the end of the post.

In a large skillet, cook carrots in olive oil, then add almond flour.

carrots in olive oil in a skillet

Then add almond milk, heavy whipping cream, Dijon, garlic powder, salt, pepper, and cayenne pepper. Add to skillet, stirring constantly. Add cream cheese and melt into mixture. Cook until mixture thickens slightly.

skillet containing keto tuna noodle casserole mixture

Add peas, tuna, noodles, and 1/2 cup of the Parmesan cheese.

TIP: Rinse, rinse, rinse those shirataki noodles! They’re a bit stinky when you initially remove them from the package, so you need to rinse until they have little to no odor.

skillet containing tuna, noodles, and peas

Stir to combine, then add to a casserole dish and top with remaining Parmesan cheese and finely crushed pork rinds. Bake for 10 minutes until you get…

overhead view of keto tuna casserole on top of a blue towel

this!

Where to Buy Fettucine Shirataki Noodles

You may be able to find the popular brand Miracle Noodle at your local grocery or health food store. Or, you can buy it on Amazon:

Miracle Noodle Shirataki Noodles

I personally buy the Wonder Noodles brand, which you can get at an awesome price via Thrive Market (it’s their in-house brand). Thrive Market is pretty much like the Costco of high-quality natural foods! Get a MASSIVE discount by using the links below — you’ll get up to a $24 free gift on your first order (which makes their already super low prices even lower!). I’ve been using Thrive Market for over two years and am a HUGE huge fan!

Get net carb-free Wonder Noodles at an awesome price!

Or, you can read my full Thrive Market review here!

If you pick up some extra bags of shirataki noodles, you’ll want to use them in my Keto Chicken Alfredo with Broccoli recipe too.

Nutrition Facts for Easy Keto Tuna Bake

Per serving:

  • 300 calories
  • 24g fat
  • 17g protein
  • 3g net carbs

closeup of spoon with keto tuna casserole over a casserole dish

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I hope you love this easy keto tuna bake recipe! If you liked this post, I would so appreciate you giving it a share by using the social sharing icons. THANK YOU!

overhead view of keto tuna casserole in a casserole dish

Keto Tuna Casserole

This Keto Tuna Casserole is comforting, warming, and so easy to make. It's tuna noodle style with the help of keto noodles and is ready in just over 20 minutes!
Print Pin Rate
Course: Main Course
Cuisine: American, Western
Keyword: gluten free tuna casserole, keto tuna bake, keto tuna casserole, keto tuna noodle casserole, low carb tuna casserole
Prep Time: 5 minutes
Cook Time: 18 minutes
Total Time: 23 minutes
Servings: 6
Calories: 300kcal

Ingredients

  • 2 tbsp olive oil
  • 1/4 cup diced carrots
  • 2 tbsp almond flour
  • 3/4 cup unsweetened almond milk
  • 1/2 cup heavy whipping cream
  • 2 tbsp Dijon mustard
  • 1/2 tsp garlic powder
  • 1 tsp salt
  • 1/2 tsp pepper
  • 1/8 tsp cayenne pepper optional
  • 4 oz cream cheese
  • 1/4 cup frozen peas
  • 2 5-oz cans tuna fish
  • 2 7-oz packages fettuccine shirataki noodles drained and thoroughly rinsed
  • 3/4 cup shredded Parmesan cheese divided
  • 1/4 cup finely crushed pork rinds

Instructions

  • Preheat oven to 425 F.
  • Heat oil in a large nonstick skillet over medium-high heat. Adds carrots and cook for 3 minutes. Add almond flour, stirring to combine. Cook for an extra 1-2 minutes.
  • Combine almond milk, heavy whipping cream, Dijon, garlic powder, salt, pepper, and cayenne pepper. Add to skillet, stirring constantly. Add cream cheese and melt into mixture. Cook until mixture thickens slightly.
  • Add peas, tuna, noodles, and 1/2 cup Parmesan cheese. Stir well to combine.
  • Transfer mixture to a casserole dish. Top with remaining 1/4 cup Parmesan cheese and pork rinds.
  • Bake at 425 F for 10 minutes or until mixture is bubbly and pork rinds are golden.

Nutrition Facts
Keto Tuna Casserole
Amount Per Serving
Calories 300 Calories from Fat 216
% Daily Value*
Fat 24g37%
Saturated Fat 11g69%
Cholesterol 75mg25%
Sodium 896mg39%
Potassium 176mg5%
Carbohydrates 4g1%
Fiber 1g4%
Sugar 1g1%
Protein 17g34%
Vitamin A 1624IU32%
Vitamin C 3mg4%
Calcium 235mg24%
Iron 1mg6%
* Percent Daily Values are based on a 2000 calorie diet.

Nutrition Disclaimer



Nutrition facts are included as a courtesy only. They are accurate to the best of our knowledge based on the ingredients and brands used, but their accuracy is not guaranteed. If applicable, sugar alcohols have already been removed from the total carb count.

2 Comments

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  • I’m surprised you didn’t mention rinsing Shirataki noodles, & also mentioning that to get rid of some of the springy texture pan frying noodles in a hot dry pan till the water is gone. I love and have made many of your recipes.

    • Hi Anne, Thank you for your comment and kind words about my recipes! 🙂 I just updated the post; I usually mention the rinsing part, but forgot to in this recipe. I have not yet tried the frying tip but have heard of it – thank you for the reminder! I’m looking forward to trying it.

Welcome! I’m Jessica.

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