Mix together the turkey, pear, egg, panko, parsley, garlic, sage, rosemary, and allspice in a large bowl until well combined. Add the salt and pepper, or more to taste. (To test the flavor, cook a teaspoon or two of the mixture in the microwave or a small skillet.)
Divide the mixture into 6 equal portions and shape them into patties, gently pressing the center of each to create a slight indentation. This will prevent the patty from bulging in the center, so that you end up with a flat, evenly cooked burger. Refrigerate the patties until the grill is ready.
Prepare a charcoal fire or a gas grill to medium-hot. Wipe the rack with canola oil and lay the burgers on it indentation-side up. Let them cook, without pressing down on them, until the bottoms are well seared, about 5 to 7 minutes. Flip the burgers and continue grilling until they are completely cooked through (the juices will run clear), another 5 to 7 minutes.
OR
Add all ingredients together into a meatloaf pan and cook at 350 degrees for 30-45 minutes.