Making Korean BBQ Meatballs with Spicy Mayo Dip is straightforward and quick. Just follow these steps:

1. Preheat the Oven: Start by preheating your oven to 400°F (200°C). Line a baking sheet with parchment paper for easy cleanup.
2. Mix Meatball Ingredients: In a large mixing bowl, combine the ground beef, breadcrumbs, egg, soy sauce, sesame oil, garlic, ginger, green onions, brown sugar, salt, and black pepper. Mix until just combined, being careful not to overmix.
3. Form Meatballs: Using your hands, scoop out portions of the meat mixture and roll them into balls, about 1 to 1½ inches in diameter. Place them on the prepared baking sheet.
4. Bake the Meatballs: Bake in the preheated oven for 15-20 minutes, or until the meatballs are cooked through and browned on the outside. An internal temperature of 160°F (70°C) is ideal.
5. Prepare Spicy Mayo Dip: While the meatballs are baking, mix together the mayonnaise, sriracha, rice vinegar, and sesame oil in a small bowl. Adjust the sriracha amount according to your heat preference.
6. Garnish Meatballs: Once cooked, remove the meatballs from the oven and sprinkle with sesame seeds for garnish.
7. Serve: Transfer the meatballs to a serving platter and serve them warm with the spicy mayo dip on the side.

Following these simple steps guarantees that your Korean BBQ Meatballs will be a sensation at your table!