Cut bread diagonally into 12 (1/4 inch thick) slices; arrange on baking sheet.
Brush slices evenly with Italian dressing and sprinkle with Parmesan cheese.
Bake 375 degrees 5 - 6 minutes or until lightly toasted.
Spread untoasted sides of bread slices evenly with mayonnaise and mustard.
Layer 4 bread slices, mayonnaise side up with salami, bologna and provolone. Top with 4 bread slices, mayonnaise side up; layer with lettuce tomatoes and bacon. Top with remaining 4 bread slices, mayonnaise side down.