Heat olive oil in a large skillet or wok over medium heat.
Add minced garlic and sauté for 1-2 minutes until fragrant.

Add sliced Shiitake mushrooms to the skillet and cook for 5-6 minutes until they start to brown and become tender.

Add the green beans to the skillet and cook for an additional 5-7 minutes, stirring occasionally, until the beans are crisp-tender.

In a small bowl, mix together soy sauce and sesame oil.
Pour the soy sauce mixture over the mushrooms and green beans, stirring well to coat evenly.

Season with salt and pepper to taste.
Cook for another 1-2 minutes, allowing the flavors to meld together.
Remove from heat and transfer to a serving dish.
Garnish with sesame seeds if desired.

Enjoy it.