Warm the extra virgin olive oil in a large skillet or wok over medium-high heat.
Add the sliced onion and sauté for about 3 minutes until translucent.
Incorporate the minced garlic and ginger, stirring for an additional 30 seconds until aromatic.
Add the sliced mushrooms and bell pepper, cooking for approximately 5 minutes until they soften slightly.
Introduce the broccoli florets to the pan, and stir-fry for another 3-4 minutes until vibrant green and slightly crunchy.
Drizzle in the soy sauce and toasted sesame oil, mixing well to coat all vegetables.
Season with salt and black pepper to taste, and let cook together for an extra minute or two.
Remove from heat and sprinkle sesame seeds on top before serving.