These juicy burgers combine a couple of kid-friendly flavors: the sweetness of grated pear and seasonings typically used in breakfast sausage. They're also made with coarse panko bread crumbs (sold in most large grocery stores), which helps keep the texture of the burger on the lighter side.
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.