Keto Tuna Salad Stuffed Bell Peppers combines flaked tuna with mayonnaise, Dijon mustard, and finely chopped vegetables into a thick, creamy filling that sits neatly inside fresh bell pepper halves. The mixture holds together well while the peppers stay crisp, creating a balanced contrast between soft and firm textures in every bite.

About This Recipe

This recipe comes together by combining tuna with mayonnaise and a small amount of mustard to form a thick, cohesive mixture that stays stable when spooned into the peppers. The balance of the base is what defines the result. Too much liquid will loosen the mixture, while the right ratio keeps it dense enough to hold its shape without becoming dry.

The tuna absorbs the seasoning quickly, allowing the flavor to spread evenly throughout the mixture without needing long resting time. Finely chopped celery and onion are worked in to break up the consistency and add a slight crunch, keeping the filling from feeling too uniform. The texture stays consistent from start to finish, with no separation between the ingredients.

Bell peppers act as a firm outer layer that holds everything together. Because they are used raw, they keep their structure and provide a clean, crisp bite that contrasts directly with the softer filling. Their shape also controls the portion size naturally, making each half a contained serving.

Served cold, the dish stays stable and compact. The filling remains thick and cohesive, while the peppers maintain their firmness, creating a simple combination of textures that works without needing additional elements.

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Why You’ll Love This Recipe

• No cooking required
• Thick, stable filling that holds shape
• Crisp and creamy texture contrast
• Quick to prepare
• Simple ingredients
• Easy to portion

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What You’ll Need for This Keto Tuna Salad Stuffed Bell Peppers

• 2 bell peppers, halved and deseeded
• 2 cans tuna (drained)
• 1/3 cup mayonnaise
• 1 tbsp Dijon mustard
• 1/4 cup celery, finely chopped
• 2 tbsp red onion, finely chopped
• Salt to taste
• Black pepper to taste

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Step-by-Step Preparation

1. Add tuna to a bowl and break it apart into small flakes.
2. Mix in mayonnaise and Dijon mustard until evenly combined.
3. Add celery and red onion.
4. Season with salt and black pepper.
5. Mix until the texture is thick and cohesive.
6. Spoon the mixture into the bell pepper halves.
7. Serve immediately or chill before serving.

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FAQ

• Can I make it ahead of time?
  Yes, store in the fridge and fill peppers before serving.
• Can I skip the onion?
  Yes, the texture will still work.
• What type of tuna works best?
  Canned tuna in water or oil, fully drained.
• Can I add eggs?
  Yes, chopped boiled eggs mix in well.

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Variations & Substitutions

• Add chopped pickles for extra texture
• Replace some mayo with Greek yogurt
• Mix in avocado
• Use different colored peppers

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Serving Suggestions

• Serve as a light lunch
• Pair with leafy greens
• Add olive oil on top

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Did you make this recipe?

I’d love to hear from you — leave a comment below and tell me how it turned out, what you liked, or if you made any tweaks!

Try these next:

• Tuna Avocado Bowl
• Chicken Avocado Salad – Quick & Easy Low-Carb Lunch

New keto recipes are added every week — check back often for more low-carb inspiration!