If you're not using leftovers, cook rice according to package. Set aside. If you are using leftover rice, reheat 1-2 minutes before assembling rice bowl.
Heat the olive oil in a skillet over medium heat.
Add the tofu and cook until golden brown, about 5 minutes.
Add the mushrooms and cook just until softened, about 4-5 minutes.
While the tofu and mushrooms are cooking, mix the sesame oil, honey, soy sauce, ginger, and garlic in a small bowl.
Add the sauce to the skillet and stir, cooking for about 1-2 minutes.
Spoon the tofu mixture, kimchi, and cucumbers on top of the rice bowl.
If desired, garnish with sesame seeds and sliced green onions. Then, serve.