01 -
Preheat oven to 200°C and position a rack in the upper third. Lightly grease a baking sheet with cooking spray.
02 -
In a large bowl, combine the finely chopped onion, eggs, ground beef, bread crumbs, scallions, and kosher salt. Gently mix with your hands until just incorporated, avoiding overworking the mixture.
03 -
With damp hands, form the mixture into 16 to 18 meatballs, each about 4 cm in diameter. Arrange evenly on the prepared baking sheet.
04 -
Transfer the baking sheet to the oven and bake for 15 to 20 minutes, or until the meatballs are browned and cooked through.
05 -
While meatballs bake, combine pineapple chunks, reserved pineapple juice, BBQ sauce, grated garlic, apple cider vinegar, soy sauce, and grated ginger in a large high-sided skillet. Bring to a simmer over medium heat, then reduce to medium-low and cook, stirring occasionally, until the sauce thickens to coat the back of a spoon, about 8 minutes.
06 -
Transfer the cooked meatballs from the oven into the skillet with the sauce. Stir gently until all meatballs are evenly coated. Garnish with additional sliced scallions before serving.