Preheat oven to 350°F. Line a large sheet pan with parchment paper.
In a large bowl add all of the meatball ingredients and mix well. Shape mixture into meatballs and place on prepared pan. Bake for 15 minutes (make sure not to overcook or they will dry out).
In a small bowl, whisk in all the ingredients to the sauce, and stir until sugar is fully dissolved.
In a large skillet over medium-high heat, pour in the sauce and bring to a boil. Immediately lower the heat and add the corn starch slurry to the sauce. Simmer 3-5 minutes, stirring often until sauce has thickened.
Remove meatballs from oven and carefully transfer them to the skillet with the sauce. Coat meatballs in the sauce. Garnish with scallions and sesame seeds. Serve with pineapple salsa (if using). Enjoy!
Pineapple Salsa:
In a medium bowl add all of the salsa ingredients and mix well. Refrigerate until ready to use.