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Tuna on Toast

A sophisticated Spanish-inspired appetizer featuring oil-packed bonito tuna served on crispy baguette slices with caramelized onions, fresh tomato, and chives.

8 servings
40 min
Published October 4, 2025

Ingredients

  • •1 tablespoon extra-virgin olive oil (preferably Spanish)
  • •1 medium yellow onion
  • •½ teaspoon sea salt
  • •4 whole plum tomatoes
  • •1 whole baguette
  • •1 can Spanish oil-packed bonito tuna
  • •1 tablespoon fresh chives

Cooking Instructions

  1. 1.

    Heat oil in a medium pan over low heat. Cook onion until golden brown, about 30 minutes. (Add 1 to 2 tablespoons water if onions stick.) Add 1/4 teaspoon sea salt; set aside. Place a grater over a bowl. Rub cut surfaces of tomatoes across grater. Discard skins. Add remaining 1/4 tsp salt. Spread grated tomato over toasts (about 1 teaspoon per toast). Top with onion and tuna. Garnish with chives.

    40 min

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