Preheat the Oven and Prepare the Muffin Tin: Preheat your oven to 375°F (190°C). Grease a 12-cup muffin tin with non-stick spray or olive oil.
- Make the Beef Mixture: In a large bowl, combine the ground beef, breadcrumbs, chopped onion, grated carrot, minced garlic, egg, soy sauce, sesame oil, rice vinegar, ground ginger, black pepper, and salt. Mix until well combined.
- Shape and Bake the Rissoles: Scoop the beef mixture into the muffin cups, filling each about 3/4 full. Shape them into neat rounds. Bake for 18-20 minutes, or until the rissoles are cooked through and slightly golden on top.
- Prepare the Teriyaki Glaze: While the rissoles are baking, combine soy sauce, honey, rice vinegar, sesame oil, grated ginger, and garlic powder in a small saucepan. Simmer for 5-7 minutes. Add cornstarch mixture if a thicker glaze is desired. Stir until thickened, then remove from heat.
- Glaze the Rissoles: Once the rissoles are done, remove from the oven and brush each rissole with the teriyaki glaze. Optionally, place them back in the oven for 5 more minutes to allow the glaze to set.
- Serve: Garnish with chopped green onions, sesame seeds, or cilantro. Serve hot with rice, vegetables, or a light salad.