Grands Tuna Melts

2 (6 ounce) cans water-packed tuna, well drained
1/3 cup chopped onion
1/3 cup mayonnaise
1/8 teaspoon salt
1/8 teaspoon pepper
1 (1 pound 1.3 ounce) can Pillsbury Grands Refrigerated Flaky Biscuits
4 ounces (1 cup) shredded Cheddar cheese
Sour cream, if desired
Chopped tomato, if desired
Shredded lettuce, if desired

Heat oven to 350 degrees F. Grease cookie sheet.

In medium bowl, combine tuna, onion, mayonnaise, salt and pepper; mix well.

Separate dough into 8 biscuits. Place 4 biscuits on greased cookie sheet. Press or roll each to form a 5-inch round. Spoon tuna mixture into center of biscuits. Top each with cheese. Press or roll remaining 4 biscuits to form 5-inch rounds. Place over filling. Press edges to seal.

Bake for 15 to 20 minutes or until golden brown.

Cut each sandwich in half. Top each with sour cream, tomato and lettuce.