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Fabulous French tuna sandwich

2

  • Prep Time10 min
  • Total Time10 min
  • Makes4 sandwiches
*PLUS Cooking time: 6 minutes
By Chatelaine

Ingredients

  • 4 onion or kaiser buns, halved

  • 2 tsp olive oil

  • 1 large onion, finely chopped

  • 1/4 tsp granulated sugar

  • 1/4 tsp salt

  • 1/4 tsp ground black pepper

  • 1 to 2 tbsp white vinegar

  • 2 tsp dried tarragon leaves

  • 1/3 cup mayonnaise, preferably light

  • 2 tbsp pitted and finely chopped black olives, optional

  • 2 oil-packed sun-dried tomatoes, halved, and finely chopped

  • 170-g can chunk light tuna

  • 2 cups chopped spinach, or arugula

Instructions

  • Heat oil in a medium-size frying pan. Add onion. Sprinkle with sugar, salt and pepper. Stir often over medium heat until onion turns golden, 5 min. Add 1 tbsp (15 mL) vinegar and tarragon. Stir constantly until liquid has evaporated, 1 min. Taste, then add more vinegar, if needed. Remove from heat. In a large bowl, stir mayonnaise with olives and tomatoes. Stir in onion mixture. Crumble in tuna. Stir in spinach. (If making ahead, cover and refrigerate tuna mixture up to 2 days.) Spoon over base of each bun. Top with bun lids. Serve or wrap and refrigerate. Sandwiches keep well, wrapped and refrigerated, up to 1 day.

Nutrition (per serving)

Calories 327, Protein 15.9g, Carbohydrates 39.4g, Fat 11.6g, Fibre 2.4g, Sodium 752mg.

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The cover of Chatelaine magazine's spring 2025 issue, reading "weekend prep made easy"; "five delicious weeknight meals", "plus, why you'll never regret buying an air fryer"; "save money, stay stylish how to build a capsule wardrobe" and "home organization special" along with photos of burritos, chicken and rice and white bean soup, quick paella in a dutch oven, almost-instant Thai chicken curry and chicken broccoli casserole in an enamelled cast-iron skillet

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