Cut bread diagonally into 8 slices; arrange on a baking sheet. Brush slices evenly with Italian dressing, and sprinkle with Parmesan cheese.
Bake at 375° for 5 to 6 minutes or until lightly toasted.
Stir together mayonnaise and mustard; spread untoasted side of bread evenly with mayonnaise mixture.
Layer 4 bread slices, mayonnaise mixture side up, with salami and next 5 ingredients. Top with remaining 4 bread slices, mayonnaise side down. Secure with wooden picks. Garnish, if desired.