01 -
Preheat oven to 400°F (204°C) and line a baking sheet with parchment paper. For air fryer, preheat to 380°F (193°C) if required by manufacturer.
02 -
In a large bowl, mix ground beef, breadcrumbs, onion, eggs, garlic powder, salt, and pepper until fully combined.
03 -
Form the meat mixture into uniform golf ball-sized portions, adjusting moisture with breadcrumbs or egg as needed.
04 -
Bake meatballs on prepared sheet for 20–25 minutes or air fry for 10 minutes, shaking halfway through.
05 -
Whisk together rice vinegar, brown sugar, chicken broth, ketchup, tomato paste, pineapple juice, cornstarch, and salt until smooth.
06 -
Heat oil in a large wok over medium-high heat. Sauté onion and bell peppers for 1 minute, then add garlic and cook for 30 seconds.
07 -
Pour sauce into the wok and cook until thickened. Add cooked meatballs and pineapple chunks, toss to coat, and cook for 2 minutes.