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By Lienta Anderson
Keto Tuna Casserole
4 steps
Prep:10minCook:20min
Ditch the noodles for celery, onions, and peppers in this keto-friendly tuna casserole that's ready in 30 minutes. Enjoy a delicious and low-carb meal!
Updated at: Wed, 10 Dec 2025 08:39:36 GMT
Nutrition balance score
Good
Glycemic Index
22
Low
Glycemic Load
2
Low
Nutrition per serving
Calories867.6 kcal (43%)
Total Fat76.9 g (110%)
Carbs7.2 g (3%)
Sugars2.8 g (3%)
Protein38.1 g (76%)
Sodium734.6 mg (37%)
Fiber2.3 g (8%)
% Daily Values based on a 2,000 calorie diet
Ingredients
4 servings
Instructions
Step 1
Preheat the oven to 200°C. Chop onion, bell pepper, and celery finely and fry in butter in a large frying pan until slightly soft. Season with salt and pepper.
Step 2
Mix tuna, mayonnaise, parmesan cheese, and chili flakes in a greased baking dish. Add fried vegetables and stir.
Step 3
Bake for 15-20 minutes or until golden brown.
Step 4
Serve with baby spinach and olive oil.












