• 1 can (170 g) flaked tuna, drained
• 2 piece hard-boiled eggs, peeled and chopped
• 2 piece green onions, chopped
• 1 medium pickle, chopped
• 1 cup(s) (250 ml) shredded swiss cheese
• 1/4 cup(s) (50 ml) mayonnaise
• 1 teaspoons (5 ml) dijon mustard (or regular mustard, if you prefer)
• 4 piece kaiser or sesame buns, split

Preheat the oven to 400 degrees F (200 degrees C).
In a medium mixing bowl, stir together the tuna, eggs, green onions, pickle and cheese. Add the mayonnaise and mustard and stir to mix.
Spoon the tuna mixture into split buns, dividing it evenly. Wrap each bun tightly in foil. Place in preheated oven and bake for 15 minutes — or until the cheese is melted and the filling is hot.