Make a bun out of a tomato in this healthy low-carb tuna melt recipe that swaps bread for veggies. You save 23 grams of carbohydrate and get 1 veggie serving while you're at it!

Katie Webster
Source:, December 2017


Recipe Summary

10 mins
15 mins


Ingredient Checklist


Instructions Checklist
  • Arrange rack in upper third of oven. Preheat broiler. Line a baking sheet with foil.

  • Combine yogurt and mayonnaise in a medium bowl. Mix in tuna, breaking up the chunks. Add capers, dill and pepper and stir to combine.

  • Set tomato halves on foil, cut-side up. Divide the tuna mixture evenly among 4 of the halves. Top with cheese. Broil until the cheese is melted, 4 to 6 minutes. Top with the other tomato half. Let cool slightly before serving.

Nutrition Facts

218 calories; protein 18.4g 37% DV; carbohydrates 8.3g 3% DV; exchange other carbs 0.5; dietary fiber 2.2g 9% DV; sugars 5.2g; fat 12.9g 20% DV; saturated fat 5.9g 30% DV; cholesterol 47.7mg 16% DV; vitamin a iu 1900.3IU 38% DV; vitamin c 25mg 42% DV; folate 37.3mcg 9% DV; calcium 233.5mg 23% DV; iron 1.4mg 8% DV; magnesium 39.6mg 14% DV; potassium 543.2mg 15% DV; sodium 372.4mg 15% DV; thiamin 0.1mg 9% DV.

Reviews (2)

Read More Reviews
2 Ratings
  • 5 star values: 1
  • 4 star values: 1
  • 3 star values: 0
  • 2 star values: 0
  • 1 star values: 0
Rating: 4 stars
They had a similar item on a Coco's Restaurant menu when I worked there. It was called "Have -a-Heart" and I loved it then too. One substitute for the Greek yoghurt is Lebni. It has even less water than the yoghurt and is just a tad less sour. Also when cutting the tomato I did a simple VanDyke cut (large zig-zag) that makes a better vessel for the tuna. Love the capers in the tuna! Read More
Rating: 5 stars
Love this cheesy tuna melt! It's quick and easy and makes for a great for a weeknight dinner. Read More