Muffuletta Grilled Cheese | Real California Milk

Ingredients

• 2/3 cup large pimento-stuffed olives
• 2/3 cup pitted Kalamata olives
• 1 celery stalk, cut into chunks
• 3 tablespoons fresh parsley leaves
• 2 tablespoons fresh lemon juice or red wine vinegar
• 2 tablespoons olive oil
• 1 tablespoon fresh oregano leaves
• 2 pepperoncini peppers, stemmed (optional)
• Salt and black pepper to taste
• 4 teaspoons Real California unsalted butter, softened, divided
• 4 French rolls, split
• 8 ounces thinly sliced Real California mozzarella cheese
• 8 ounces thinly sliced Real California provolone cheese
• 4 ounces thinly sliced Italian salami
• 4 ounces thinly sliced mortadella or ham
• 4 ounces thinly sliced sopressatta, coppa, or other Italian cold cut