Balsamic Tuna Sandwich

Balsamic Tuna Sandwich

B
Ben
•July 13, 2026
Thanks to Mona Lisa's in Little Italy San Diego (https://monalisaitalianfoods.com/)
Beginner-FriendlyMediterraneanNo-CookHealthyHigh-ProteinEasy
15 min
Prep Time
0 min
Cook Time
4
Servings
15 min
Total Time
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You can eat it right away for a decent sandwich, but the secret is marinating for at least one night. The quality of balsamic and olive oil are important in this uncooked sandwich.

Gallery

Balsamic Tuna Sandwich

Balsamic Tuna Sandwich

Balsamic Tuna Sandwich

Balsamic Tuna Sandwich

Image for Balsamic Tuna Sandwich

The Balasamic and Olive Oil used

Adjust Recipe

Servings
4

Ingredients

  • 10 ounces canned tuna in water
  • ¼ cups extra virgin olive oil
  • 2 tbsp balsamic vinegar
  • 35 ounces onion (chopped)
  • ½ tsp oregano
  • 2 slices tomato (optional)
  • 1 handful leafy greens (optional)

Instructions

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1

Ope the tuna cans and drain the water

2

Optionally feed your cat

Step 2
3

Put the tuna in a bowl or Tupperware container, along with the olive oil, balsamic, onions, and oregano.

4

Optionally let marinate over night

5

Spread the mixture on bread and top with tomato slices and leafy greens. Add another slice of bread to complete the sandwich. Also works great as a sub.