Sausage Cheese Burgers with Sweet Pepper Relish - Sutter Home Family Vineyards

Ingredients

• 2 tablespoons olive oil
• 1 tablespoon Dijon mustard
• 4 tablespoons Sutter Home Zinfandel
• 4 tablespoons red onion, minced
• 2 garlic cloves, minced
• 2 large red bell peppers, quartered
• 2 large yellow bell peppers, quartered
• ¾ pound bulk mild Italian sausage
• ¾ pound fresh ground beef chuck
• 2 tablespoons chopped fresh parsley
• 1 tablespoon chopped fresh oregano
• 1 1/2 teaspoons kosher salt
• 1 1/2 teaspoons ground black pepper
• Vegetable oil, for brushing on the grill rack
• 6 5-inch round Italian rolls, halved horizontally
• 6 round slices provolone cheese
• 6 tablespoons mayonnaise