Bring 6 cups water to a boil in a medium saucepan. Reduce heat to a simmer and whisk in miso. Add edamame and cook 2 minutes.
Remove from heat and add tofu and soy sauce. Let sit 3 minutes to warm through.
Divide among bowls and top with a few sprinkles of nori strips and some green onions.
*Find miso in a market's refrigerated foods section.
Note: Nutritional analysis is per 2-cup serving.