Preheat your oven to 400°F (200°C).
In a large mixing bowl, combine the water, tamari or soy sauce, hoisin sauce, sriracha, and minced garlic. Stir well.
In your casserole dish, add the fine diced tofu followed by the thawed mixed vegetables. Pour the sauce mixture over the tofu and veggies.
Break the ramen noodles into smaller pieces and sprinkle them evenly over the top of the mixture.
Cover the casserole with aluminum foil and bake for 25 minutes. Then remove the foil and bake for an additional 10-15 minutes.
Garnish with sliced green onions and any additional toppings. Serve warm and enjoy!