Making Sweet Chili Meatballs is straightforward if you follow these clear steps:

1. Preheat the Oven: Start by preheating your oven to 400°F (200°C). Line a baking sheet with parchment paper.
2. Mix the Meatball Ingredients: In a large bowl, combine the ground beef, breadcrumbs, Parmesan cheese, green onions, egg, garlic, ginger, salt, black pepper, and red pepper flakes (if using).
3. Form the Meatballs: Mix until just combined, then shape the mixture into small meatballs, about 1 inch in diameter. Place them on the prepared baking sheet.
4. Bake the Meatballs: Bake in the preheated oven for 20 minutes, or until browned and cooked through.
5. Prepare the Sauce: While the meatballs are baking, in a small saucepan, combine sweet chili sauce, soy sauce, and rice vinegar. Heat over medium heat until warm, stirring occasionally.
6. Coat the Meatballs: Once the meatballs are done, remove them from the oven and toss them in the warm sauce until evenly coated.
7. Finish Cooking: Return the coated meatballs to the oven for an additional 5–10 minutes to allow the sauce to caramelize slightly.
8. Serve: Remove from the oven and garnish with sesame seeds and chopped cilantro before serving.

These easy-to-follow steps will lead you to create incredible Sweet Chili Meatballs that your family will undoubtedly love!