Preheat your oven to 400F. Then, cut the brussels sprouts into quarters and mince your garlic.
After chopping the brussel sprouts, make the miso glaze. Whisk the miso paste, maple syrup, avocado oil, and minced garlic in a small bowl until thick. Then, set aside.
Add the chopped brussels sprouts to a baking tray and toss with the avocado oil, salt, & chili flakes. Roast in the oven for 20 minutes until the brussels sprouts are browned and beginning to crisp.
Remove the brussels sprouts from the oven, add the miso glaze, and stir.. Then, add the baking tray back to the oven and cook an additional 5-10 minutes. Watch closely to make sure they do not burn.
Remove the brussels sprouts from the oven and immediately top with the sesame seeds. Then, serve and enjoy warm!