Prepare ingredients. Slice onion into ½” julienne strips. Slice mushrooms. Roughly chop garlic.
Slice tofu into small cubes or in ½” slices, however you prefer. Slice scallions on the bias.
Heat 2 Tbsp vegetable oil in a large sauce pot.
Sautee garlic, onion, ginger for 1-2 minutes. Add mushroom and bok choy, cook another 1-2 minutes.
Add stock, miso, soy sauce, and sesame oil. Bring to low simmer.
While simmering, add pasta nests and cook 1-2 minutes until pasta is cooked.
Add in tofu and cook until heated.
Top with scallions and serve.