In a large pot, heat the sesame oil over medium heat. Add the sliced shiitake mushrooms and sauté until they are tender and golden, about 5 minutes.
Stir in the miso paste, soy sauce, and chili garlic sauce. Cook for an additional minute until the paste becomes aromatic.
Pour in the vegetable broth and bring the mixture to a boil. Reduce the heat to simmer and let it cook for about 10-15 minutes to meld the flavors.
Meanwhile, cook the ramen noodles according to package instructions. Drain and set aside.
In the last 5 minutes of the broth simmering, add the bok choy and julienned carrots to the pot. Allow them to cook until just tender but still vibrant.
To assemble the ramen bowls, divide the cooked noodles among serving bowls. Ladle the hot broth and vegetable mixture over the noodles.
Top each bowl with a soft-boiled egg, sliced green onions, and fresh cilantro. Sprinkle toasted sesame seeds as a finishing touch.
Notes
Adjust the chili garlic sauce to your preferred spice level.