Preheat the oven to 450 degrees F. Line a baking sheet with foil or parchment paper.

Add the ground beef, green onions, ginger, and garlic to a bowl. Season with salt and pepper. Mix until just combined. Roll into tablespoon-size balls, placing them on one side of the prepared baking sheet. Add the broccoli to the other side of the baking sheet and toss with 1 tablespoon oil, salt, and pepper. Transfer to the oven and bake for 15 minutes or until the meatballs are cooked through.

Meanwhile, in a large skillet add the oil, soy sauce, brown sugar, garlic, ginger, water, rice wine vinegar and red pepper flakes. Stir and cook over medium-high heat, for about 10 minutes. Whisk together cornstarch with ½ cup water and add to your sauce. Continue to cook until the sauce thickens. Remove from the heat.

Add the cooked meatballs to the skillet of sauce and toss, until the sauce coats the meatballs.

Serve the meatballs and remaining sauce over bowls of rice topped with additional green onions and sesame seeds. Serve the broccoli on the side.