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low carb tuna casserole with ladle

Keto Tuna Casserole

Prep Time 45 minutes
Cook Time 15 minutes
Total Time 1 hour
Servings 8
Calories 352kcal


  • 2 Tablespoons Unsalted Butter
  • 2 Cups Mushrooms sliced
  • 1/2 Yellow Onion chopped
  • 1/2 Teaspoon Kosher Salt
  • 1/4 Teaspoon Pepper
  • 1 Cup Heavy Cream
  • 1/2 Teaspoon Tabasco
  • 1 Teaspoon Thyme fresh
  • 2 Cups Cabbage shredded
  • 3 Cups Sharp Cheddar Cheese divided
  • 1 Cup Green Beans diced
  • 3 - 5 Oz Cans Albacore Tuna drained
  • Pork Rinds optional


  • Preheat oven to 425 F.
  • Add butter (2 tablespoons) to a large heat-safe skillet, over medium heat.
  • Once melted, add sliced mushrooms (2 cups), yellow onions (1/2 chopped), salt (1/2 teaspoon), and pepper (1/4 teaspoon), and saute until soft - about 10 minutes.
  • Add heavy cream (1 cup), Tabasco (1/2 teaspoon) and thyme (1 teaspoon). Reduce the heat so the cream comes to a gentle simmer (high heat will ruin the cream). Cook veggies in cream until the cream has reduced by half, and the white sauce coats the back of your spoon - about 15 minutes.
  • Stir in shredded cabbage (2 cups), and cook in cream until wilted - about 5 minutes,
  • Remove skillet from heat, and add cheddar (1 cup), diced green beans (1 cup) and Albacore Tuna (3-5 Oz Cans drained ). Stir to incorporate.
  • Taste test to see if it's salted to your taste. I usually add an additional 1/2 teaspoon of salt here.
  • Sprinkle with the remaining cheddar (2 cups).
  • OPTIONAL (but adds a much-welcomed crunch! We always do this.): Place pork rinds in a sealed zip lock bag, and pound with a rolling pin, until the pork rinds are bread crumb sized. Sprinkle on top of your casserole.
  • Bake in preheated oven for 15 minutes, or until the cheese on top starts to bubble and the casserole is heated through.
  • Allow casserole to cool slightly before slicing, and enjoy!


Calories: 352kcal | Total Carbohydrates: 5g | Protein: 19g | Fat: 29g | Sodium: 564mg | Fiber: 1g | Sugar: 2g | Net Carbs: 4g

Delicious recipe from Lindsey Hyland // www.thelittlepine.com