Preheat oven to 400°F (200°C). Line a baking sheet withparchment paper or a silicone baking sheet. Place the tofu cubeson the prepared baking sheet. Bake for 20 minutes, flip, and bake for 10 to 15 minutes more until browned. Set aside.
To make the sauce, in a small saucepan, combine the broth, ricewine vinegar, sweet chili sauce, tamari, and sriracha. Bring to a boilover medium-high heat. When boiling, reduce the heat, and stir inthe cornstarch. Cook, stirring constantly, for 5 minutes or until thickened. Remove from heat, and set aside.
Heat a large wok or skillet over medium-high heat. When hot, sauté the shallot with as little water as possible, just enough to avoid burning, for 3 minutes until browned. Add the garlic and ginger, and stir for 1 minute adding water as needed to avoid burning. Add the mushrooms, carrots, and bell peppers, and cook for 5 minutes until the mushrooms release liquid. Add the snow peas, cabbage, broccoli, kale, and bok choy, and cook for3 to 4 minutes until the vegetables soften. Add the tofu and sauce, and stir to combine.
Serve over cauliflower rice, brown rice, or quinoa, if using, and top with sesame seeds, scallions, and cilantro.