Roast Pork And Provolone Melt

Ingredients

• 1 cup coarsely chopped parsley
• 1/2 cup green Spanish olives
• 2 garlic cloves, coarsely chopped
• 2 jalapeno chiles, seeded and coarsely chopped
• 1 tablespoon white wine vinegar
• 3 tablespoons extra-virgin olive oil
• Salt and freshly ground pepper
• Ketchup
• 4 large kaiser rolls, split
• 1 pound thinly sliced roast pork or ham
• 1 large onion, thinly sliced
• Eight 1/4-inch-thick slices of Italian Provolone (about 6 ounces)