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Keto Tuna Frittata

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Keto Tuna Frittata

Breakfast28 February 2026 All Recipes
Prep: 8 min🍳 Cook: 16 minReady: 24 min
149
Calories
1.4g
Net Carbs
11.4g
Protein
10.5g
Fat
Prep: 8 min🔥 Cook: 16 minReady: 24 min

How to Make It

Step 1

Preheat the oven to 400 degrees Fahrenheit.

Step 2

Crack the eggs into a mixing bowl, season with salt and pepper and beat together to combine.

Step 3

Add the watercress, discarding any tough stems and stir into the beaten egg. Set aside.

Step 4

Thinly slice the onion. Heat the oil in an oven proof skillet over a low/medium heat. Add the onion and capers and sweat gently for 2-3 minutes until tender and fragrant.

Step 5

Flake in the tuna and stir well to combine, distributing the filling evenly across the base of the skillet.

Step 6

Pour the beaten egg and watercress over the tuna and allow to settle and cook for a few minutes. Once the frittata starts to set around the edges, use a spatula to gently ease the cooked egg away from the skillet sides, allowing any uncooked egg to flow underneath.

Step 7

Once the frittata is almost cooked through with a thin layer of liquid remaining on the surface, transfer to the oven to bake for a further 6-7 minutes or until cooked through and golden brown all over. Carefully slide out of the skillet using a spatula to serve.

Ingredients

  • Raw Egg – 6 medium
  • Canned Tuna – 2 ounce
  • Capers – 2 teaspoon
  • Olive Oil – 1 tablespoon
  • Watercress – 1 cup
  • Red Onion – ¼ medium – 2 1/2″ diameter
  • Salt, Sea Salt – ⅛ teaspoon
  • Black Pepper – ⅛ teaspoon

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