In a small bowl mix the sauce ingredients. Set aside half of the sauce to serve with the meat loaf. Top each meat loaf with 3 tablespoons of the remaining sauce and coat thoroughly.

Using a metal spatula, gently pick up each loaf from the sheet pan and place directly on the cooking grate. Grill the meat loaves over indirect medium-low heat, with the lid closed, until a thermometer inserted into the center of each loaf registers 155°F, 50 minutes to 1 hour. Remove the loaves from the grill and let rest 10 to 15 minutes. Once removed from the grill, the loaves will continue to cook, allowing them to reach the recommended 160°F for ground beef and pork. Cut the loaves into slices and serve with the reserved sauce.

Using a metal spatula, gently pick up each loaf from the sheet pan and place directly on the cooking grate above foil pan. Grill the meat loaves over medium-low heat, with the lid closed, until a thermometer inserted into the center of each loaf registers 155°F, 50 minutes to 1 hour. Remove the loaves from the grill and let rest 10 to 15 minutes. Once removed from the grill, the loaves will continue to cook, allowing them to reach the recommended 160°F for ground beef and pork. Cut the loaves into slices and serve with the reserved sauce.