Keto Tuna Casserole

Keto Tuna Casserole

Keto Tuna Casserole

This tuna casserole recipe is nostalgic, comforting, and oh-so satisfying.

Tuna Casserole is right up there with meatloaf, when it comes to comfort food. It’s been a family favorite for generations!

Here at cjsketokitchen, We love belly warming casserole recipes there is something so comforting about a bubbly warm meal from the oven.

Keto Tuna Casserole

It’s no surprise that this tuna noodle casserole has held its place at the top of so many family favorite recipes. It is easy to make, but it’s affordable, tasty, and versatile. Nearly any leftovers or any kind of veggies can be tossed right in! Be creative with this tuna fish casserole recipe.

I made this for the channel many years ago, and feel like it deserves some more attention.

This keto dish, can go from prep to presentation in no time at all! Need a quick potluck entrée for work or a neighborhood event? This is hands down the best tuna noodle casserole recipe out there!

Keto Tuna Casserole



Before cooking zucchini, it is important to sweat it first. To do so, you’ll need to slice the zucchini into thin slices, or into zoodles with your spiralizer, then place them on a cookie sheet. Next, sprinkle the slices with salt and let them sit for about 30 minutes.

This will draw out the excess moisture and help the zucchini to cook down. Once the zucchini has sweated out the moisture, you can then pat it dry with paper towels. This will ensure the zucchini cooks evenly and prevents it from becoming soggy. The sweated zucchini can then be added to recipes like stir-fries, casseroles, and more.


Keto Tuna Casserole


In this section we try and highlight other recipes that might interest you.  This week we decided to highlight another extremely popular and easy to make recipe:





Keto Pollo Loco casserole



Don’t forget to subscribe to our blog, if you haven’t already.  We plan on releasing keto content that will be exclusive for blog subscribers.  Also feel free to share this recipe with family and friends! If you haven’t already consider subscribing over on YouTube, we’d love to have you as part of our to  Keto Family.


Keto Quick Start Guide

Here is a companion blog post to get the best results from our Keto Quick Start Guide

Keto Tuna Casserole
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4 from 4 votes

Keto Tuna Casserole

The king of all comfort foods, this classic casserole, or hot dish is perfect for an easy dinner, and popular enough for an potluck!
Course easy 30 minute meals, easy autumn veggies, easy keto dinners easy low carb dinners 30-minute meals, easy low carb casseroles, easy summer meals
Cuisine American
Keyword Atkins Diet recipes, diabetic safe recipes, easy casserole, easy keto casseroles, easy low carb casseroles, family style meals, Fast Keto meals
Prep Time 15 minutes
Cook Time 35 minutes
Servings 10
Calories 315kcal


  • 4 zucchini spiralized: sweated
  • 2 cans tuna well drained
  • 1/4 cup onion chopped
  • 1/4 cup celery chopped
  • 1/2 cup sour cream
  • 1/2 cup mayonnaise
  • 2 TB yellow mustard
  • 1 tsp all purpose herbal seasoning
  • 1 tsp salt and pepper
  • 6 oz cheese shredded
  • 4 oz mushrooms chopped

Keto Breadcrumb topping:

  • 1/2 cup almond flour
  • 4 oz grated parmesan cheese
  • 2 TB melted butter


  • Preheat oven to 375 degrees. In a 9x13 inch baking dish, place zucchini noodles.
  • In a small bowl combine sauce ingredients. Add seasoning sauce to zucchini.
  • Add in drained tuna, mushrooms, and cheese. Stir everything together well to combine.
  • Combine topping ingredients. Sprinkle evenly on top.
  • Bake at 375 for 30 minutes, or until bubbly. Broil at the end of cooking for extra browning of your topping. Allow casserole to sit 10 to 15 minutes before serving.



Total carbs: 6g
Fiber: 2g
Net carbs: 4g
Keto Tuna Casserole


Serving: 6oz | Calories: 315kcal | Carbohydrates: 6g | Protein: 17g | Fat: 25g | Saturated Fat: 9g | Polyunsaturated Fat: 6g | Monounsaturated Fat: 5g | Trans Fat: 0.1g | Cholesterol: 57mg | Sodium: 751mg | Potassium: 333mg | Fiber: 2g | Sugar: 3g | Vitamin A: 607IU | Vitamin C: 15mg | Calcium: 268mg | Iron: 1mg





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4 from 4 votes (4 ratings without comment)

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