3/4 cup mayonnaise, divided
2 tablespoons chopped green pepper
1-1/2 teaspoons grated onion
1-1/2 teaspoons prepared mustard
1/4 teaspoon Worcestershire sauce
1 can (6 ounces) tuna, drained and flaked
3 hamburger buns, split
6 slices tomato
3/4 cup shredded cheddar cheese
In a small bowl, combine 1/4 cup mayonnaise, green pepper, onion, mustard and Worcestershire sauce; stir in tuna. Spread over each bun half; top each with a tomato slice. Arrange sandwiches on a baking sheet.
In a small bowl, combine the cheese and remaining mayonnaise; spoon cheese mixture over tomato.
Bake at 400° for 11-13 minutes or until topping is puffy and golden brown.