2 6-ounce cans chunk light tuna, drained
1 plum tomato, chopped
1/4 cup crumbled feta cheese
2 tablespoons chopped marinated artichoke hearts
2 tablespoons minced red onion
1 tablespoon chopped pitted kalamata olives
1 teaspoon capers, rinsed and chopped
1 teaspoon lemon juice
Freshly ground pepper to taste
8 slices whole-wheat bread
2 teaspoons canola oil
Place tuna in a medium bowl and flake with a fork. Add tomato, feta, artichokes, onion, olives, capers, lemon juice and pepper; stir to combine. Divide the tuna mixture among 4 slices of bread (about 1/2 cup each). Top with the remaining bread.
Heat Panini press. Place paninis in the pan and lower top grate. Cook the panini until golden on one side, about 2 – 4 minutes.