Step 1

To make the dressing, in a large bowl whisk together the olive oil, balsamic vinegar, Dijon mustard, and salt and pepper to taste (I like 1/2 teaspoon salt and 1/4 teaspoon pepper).

Step 2

In a large pot, bring 4 quarts of water and 1 tablespoon salt to a boil. Add pasta and cook until tender, about 8 to 10 minutes. Drain well, rinse with cold water, and drain again.

Step 3

To the bowl with the dressing, add the cooled pasta, celery, roasted red peppers, mozzarella, salami, pepperoncini, and capers. Toss to combine and sprinkle with fresh parsley.