Creating Firecracker Meatballs is easy and straightforward. Follow these step-by-step instructions to whip up this delicious dish:

1. Preheat Your Oven: Set your oven to 400°F (200°C) to prepare for baking.
2. Mix Meat and Seasonings: In a large bowl, combine ground beef, ground pork, breadcrumbs, eggs, garlic, ginger, salt, black pepper, and crushed red pepper flakes. Mix well until everything is combined.
3. Form Meatballs: With your hands, shape the mixture into small meatballs, approximately 1 to 1.5 inches in diameter, and place them on a baking sheet lined with parchment paper.
4. Bake: Bake the meatballs in the preheated oven for about 20 minutes or until they are cooked through and nicely browned.
5. Prepare the Sauce: In a small saucepan, combine the sweet chili sauce, soy sauce, rice vinegar, and sesame oil over medium heat. Stir until heated through and well combined.
6. Coat the Meatballs: Once the meatballs are done baking, add them to the saucepan with the sauce. Gently toss the meatballs in the sauce until they are evenly coated.
7. Simmer: Allow the coated meatballs to simmer in the sauce for an additional 5 minutes, allowing the flavors to meld together.
8. Garnish and Serve: Sprinkle chopped green onions and sesame seeds over the meatballs before serving.

Following these simple steps will guide you to an exciting explosion of flavor that you and your guests will love.