Instructions

1. 1

   In a small bowl, combine mayonnaise, Dijon mustard, dried oregano, garlic powder, red wine vinegar (or lemon juice), and optional red pepper flakes. Stir until well combined and season with salt and pepper.

2. 2

   Lightly toast bread slices in a toaster or pan for extra crunch and to prevent sogginess.

3. 3

   Spread a generous layer of the zesty spread on one side of each bread slice.

4. 4

   Place cheese slices on one bread slice to create a barrier.

5. 5

   Layer salami slices on top of the cheese.

6. 6

   Add crisp lettuce, tomato slices, and red onion (if using) on top of the salami.

7. 7

   Scatter pepperoncini rings over the vegetables for zesty flavor.

8. 8

   Place the second bread slice, spread-side down, on top of the stacked ingredients.

9. 9

   Gently press down on the sandwich and slice in half diagonally or straight down.

10. 10

    Serve immediately while fresh and crisp.