- Preheat broiler to high; position rack in center of oven. Stir together mayonnaise, celery, lemon juice, chives, curry powder, salt and pepper until combined. Fold in tuna.
- Cut baguette in half lengthwise, then cut each half crosswise to make 4 sections. Arrange baguette sections, cut side up, on foil-lined baking sheet. Broil for 1 to 2 minutes or until lightly toasted.
- Spread each baguette section with butter, then divide tuna salad mixture among sections; top evenly with cheese slices. Broil for 2 to 3 minutes or until cheese is melted. To serve, cut each section in half.
Add 1/4 cup (60 mL) raisins or sliced almonds to tuna salad mixture if desired.
Serve with a side of pickle slices or cherry tomatoes.
Use whole grain baguette if desired.