Muffaletta Burgers Recipe

Ingredients (12)

• 1/2 cup chopped mixed green and black olives
• 1 tablespoon chopped capers
• 3 tablespoons chopped giardiniera (Italian-style pickled vegetables)
• 2 teaspoons red wine vinegar
• 1/4 cup extra-virgin olive oil
• Kosher salt and freshly ground black pepper
• 18 ounces freshly ground chuck
• 1/4 pound sliced spicy capicola or ham
• 1/4 pound sliced mortadella or bologna
• 1/4 pound sliced pepperoni or salami
• 1/4 pound sliced sharp provolone cheese
• 4 hearty burger buns