Cut eggplant and onion into bite-sized pieces.
Heat cooking oil in a pan and stir-fry the eggplant and onion.
Add soy sauce, sugar, minced garlic, and pepper, then stir-fry to season.
Place the sautéed eggplant on top of rice.
Finish with a drizzle of sesame oil and a sprinkle of sesame seeds.