In a large bowl, combine the halved Brussels sprouts with olive oil, sesame oil, soy sauce, grated ginger, minced garlic, honey (or maple syrup), and red pepper flakes. Toss until the Brussels sprouts are evenly coated.
Spread the Brussels sprouts evenly on a baking sheet lined with parchment paper, ensuring they are cut side down for maximum crispiness.
Roast in the preheated oven for about 20-25 minutes, or until they are golden brown and crispy, shaking the pan halfway through to ensure even cooking.
Remove the Brussels sprouts from the oven, and immediately sprinkle sesame seeds on top while still hot.
Taste and adjust seasoning with salt and pepper as desired.
Garnish with chopped green onions before serving.
Notes
For a gluten-free option, use tamari instead of soy sauce.