DIRECTIONS
1
Combine the peanut butter, rice vinegar, soy sauce, water, garlic, and red pepper flakes. Stir to combine and set aside.
2
Heat the oil in a non-stick pan over medium heat. Separate the bok choy ribs from the leaves. Place the tofu in a single layer in the skillet and add the bok choy ribs.
3
Cook 2 to 3 minutes, then flip the tofu and cook 3 more minutes, stirring to brown all sides of the tofu.
4
Add the reserved bok choy leaves, bell pepper, mushrooms, and scallion.
5
Stir in the peanut butter mixture and cook, stirring, 3 more minutes, or until the peppers are slightly softened.