If you can't find semolina bread (crusty Italian bread made with semolina flour), use an Italian or sandwich loaf.

In small bowl, combine tuna, mayonnaise, celery, parsley, onion and pepper until well blended. Cut bread on a sharp diagonal into eight 1/2 inch slices, each about 6 inches long. (Reserve any remaining bread for another use.) Layer each of 4 slices with 1/4 cup tuna mixture and 1/4 cup grated cheese. Spread each remaining slice lightly with about 1/2 tablespoon butter and place buttered side up on cheese. In large heavy skillet, cook sandwiches buttered side down over high heat until golden. Butter tops lightly; turn with a large spatula and cook other sides until golden. Makes 4 sandwiches, 590 calories each.