Preheat your oven to 425°F and line a large baking sheet with parchment paper.
In a small bowl, whisk together soy sauce, maple syrup, sesame oil, rice vinegar, cornstarch, garlic, and ginger.
Toss the tofu cubes in half of the sauce until well coated. Spread them on one half of the baking sheet.
Add the veggies to a large bowl, drizzle with avocado oil, season with salt and pepper, and toss to combine.
Spread the vegetables on the other half of the sheet pan.
Roast for 30–35 minutes, flipping the tofu halfway through, until golden and crispy.
Drizzle the remaining sauce over everything, sprinkle with sesame seeds and green onions, and serve hot.