Combine shrimp, onion, cucumbers, and carrots (plus celery, if you are using) in a bowl.
In a separate bowl mix together the yogurt, mayo and powdered peanut. If you using peanut butter, nuke it about 15 seconds to soften it up before mixing with the yogurt and mayo.
Once that’s well mixed, add your spices and mix again. Taste. The peanut taste should come through and it should be tangy (from the yogurt and lime juice) and just ever so slightly sweet and spicy. If it is all those things, you are good to go.
Heap dressing on top of the shrimp mixture and mix it thoroughly.