Preheat an air fryer to 400 degrees. Meanwhile, in a medium bowl, toss the tofu together with the arrowroot. Season with salt and pepper and place in the air fryer basket and spritz with cooking spray. Cook for 15-20 minutes or until the tofu is golden brown.

Spiralize the zucchinis with Blade D and trim them. Set aside.

Five minutes into cooking the tofu, begin the soup. In a soup pot, heat the sesame oil over medium heat. Once oil is shimmering, add the onions, ginger, and garlic and cook for 3 minutes or until onions are translucent. Add the broth, water and soy sauce and bring to a boil. Once boiling, scoop out some of the hot broth and add to the bowl with the miso. Stir to dissolve the miso and then add the miso broth back into the pot and stir. Add the zucchini noodles and let cook until slightly soft, but still al dente (they’ll continue to cook in the hot broth.)

Divide the soup and noodles into bowls and top with tofu and carrots. Garnish with red pepper flakes and serve.