Meatloaf Burgers

• 1 small onion (1/2 sliced into rings, 1/2 diced)
• 1 pound meatloaf mix (ground pork, beef and veal) or ground turkey
• 1/4 cup fresh parsley, chopped
• 1/2 cup breadcrumbs (preferably panko)
• 1 large egg
• 1 teaspoon sweet or smoked paprika
• 1/3 cup ketchup
• 1/3 cup duck sauce
• Kosher salt and freshly ground pepper
• 1 tablespoon extra-virgin olive oil
• 4 potato buns or other rolls, split
• Lettuce, sliced tomato and pickle slices, for topping

Preheat a grill to medium high. Combine the meatloaf mix with the diced onion, parsley, breadcrumbs, egg, paprika, 1 tablespoon each ketchup and duck sauce, 1 teaspoon salt and 1/2 teaspoon pepper. Gently form into four 1-inch-thick patties; make an indentation in the center of each.

Brush the patties with the olive oil and grill until marked on the bottom, about 6 minutes. Meanwhile, mix the remaining ketchup and duck sauce in a small bowl for brushing; set aside a few tablespoons. Turn the patties, brush with the ketchup mixture and continue grilling until cooked through, about 5 more minutes. Toast the buns, if desired.

Spread the buns with the reserved ketchup mixture. Serve the patties on the buns; top with the onion, lettuce, tomato and pickles. Serve with potato chips, if desired.