Cut cheeses into 1/4-inch-thick slices; place slices in a 13- x 9-inch dish, overlapping slightly.
Combine dressing and pepper; pour over cheese. Cover and chill 8 hours.
Preheat oven to 350°.
Cut baguette into 1/4-inch-thick slices. Place on baking sheets. Bake at 350°° for 8 to 10 minutes or until lightly toasted, turning once.
Drain cheeses. Place 1 cheese slice on each bread slice. Garnish with fresh basil, if desired.
Tip: To make ahead, marinate the cheese overnight in the refrigerator. Toast the bread a day ahead, and store it at room temperature. Assemble the appetizers right before serving.