Nutrition per serving may change if servings are adjusted.
2 tablespoons low-fat plain Greek yogurt
1 tablespoon mayonnaise
1 (7 ounce) can light tuna in water, drained
2 teaspoons chopped capers
Pinch dried dill
Freshly ground pepper to taste
4 large slicing tomatoes, cored and cut in half lengthwise
4 slices deli-style sharp Cheddar cheese
Arrange rack in upper third of oven. Preheat broiler. Line a baking sheet with aluminum foil.
Stir Greek yogurt and mayonnaise in a medium bowl. Add tuna, and mix in while breaking up the chunks of tuna. Add capers, dill and pepper and stir to combine.
Set tomato halves on foil, cut-side up. Top with tuna, dividing 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.