Open-Faced Tuna Melt Sandwich


To take a tuna melt from good to great, it has to have all the right components. In other words, plain mayo alone won't cut it. Here's how we do it: open-faced with crusty toasted bread, melty cheese, capers, cornichons, Dijon mustard, and plenty of seasoning. On a chilly fall day, nothing tastes better.

Prep Time:
8 mins
Cook Time:
4 mins
Total Time:
12 mins
3 sandwiches


  • 2 (3 ounce) pouches white albacore tuna, drained

  • 3 tablespoons Primal Kitchen™ Avocado Oil Mayonnaise, plus more for spreading

  • 2 teaspoons Dijon mustard

  • 2 tablespoons finely chopped red onion, or more to taste

  • 2 teaspoons capers, drained

  • 2 tablespoons chopped cornichons

  • 1 tablespoon lemon juice

  • ¼ teaspoon fresh or dried thyme leaves

  • Sea salt and freshly ground black pepper to taste

  • 3 slices whole wheat or whole grain bread

  • 6 thin slices tomato

  • 3 large slices Gruyere, white Cheddar, or provolone cheese


  1. Set the oven to broil and move the rack to the highest position.

  2. In a medium bowl, combine tuna, mayonnaise, mustard, red onion, capers, cornichons, lemon juice, thyme, salt, and pepper and stir thoroughly until combined. Leave the tuna in slightly large chunks, if possible.

  3. Arrange bread on a baking sheet and spread mayonnaise on each slice. Divide tuna salad evenly among slices, then top each with 2 slices of tomato and 1 slice of cheese.

  4. Broil tuna melts until cheese is golden brown and bubbling, 3 to 4 minutes. Serve warm.

Nutrition Facts (per serving)

370 Calories
23g Fat
14g Carbs
27g Protein
Nutrition Facts
Servings Per Recipe 3
Calories 370
% Daily Value *
Total Fat 23g 30%
Saturated Fat 8g 38%
Cholesterol 65mg 22%
Sodium 724mg 31%
Total Carbohydrate 14g 5%
Dietary Fiber 2g 8%
Total Sugars 2g
Protein 27g
Vitamin C 3mg 16%
Calcium 343mg 26%
Iron 3mg 16%
Potassium 252mg 5%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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