Fabulous French tuna sandwich

1

PREP TIME

10 min

Makes

4 sandwiches

* PLUS Cooking time: 6 minutes

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
  • 15.9 g,
  • Carbohydrates
  • 39.4 g,
  • Fat
  • 11.6 g,
  • Fibre
  • 2.4 g,
  • Sodium
  • 752 mg.