In a small bowl, whisk together peanut butter, rice vinegar, coconut aminos, honey, lime juice, ginger, sesame oil, garlic, and red pepper flakes.
If the dressing is thick, thin with water. Season to taste with salt and pepper (I like 1 teaspoon salt and 1/2 teaspoon pepper) and more red chili flakes if desired.
Notes
To make the dressing vegan, use maple syrup instead of the honey. Adapted from Jessica Gavin.