Roasted Artichoke Salad

Name: Roasted Artichoke Salad
Ingredients: 4 boxes (9 ounces each) frozen artichoke hearts, defrosted; Good olive oil; Kosher salt and freshly ground black pepper; 1 shallot, minced; 3 tablespoons freshly squeezed lemon juice; 1 teaspoon Dijon mustard; 5 tablespoons white wine vinegar or champagne vinegar, divided; 1/2 cup chopped fresh basil leaves; 6 tablespoons capers, drained; 2 roasted red peppers, sliced thin; 1/2 cup minced red onion; 1/2 cup chopped fresh parsley leaves; 2 pinches hot red pepper flakes, optional