In a large pot with sesame oil, add in the sliced mushrooms, carrot, and scallion. Add soy sauce and let it cook until the mushrooms have lost most of their water. Then, add in the spinach, water, and 1 tablespoon miso paste. Give it a good mix, and let it cook for about 5 to 10 minutes until the carrots are soft. Set aside.
Meanwhile, heat a large pan with the canola oil and season it with the salt and curry powder. Tilt the pan until spices and oil are combined, then add the tofu slices. Cook on medium to high heat for about 8 to 10 minutes until golden brown on one side, then flip and repeat.
Add the ramen noodles into the soup for a few minutes until soft. Add more miso paste and soy sauce to taste.
Once the ramen noodles are soft, pour the soup into bowls, add the pan-roasted tofu, and top with a few freshly cut scallions.