In a small saucepan with boiling water, cook sliced rhubarb for about 1 minute or until tender crisp but not mushy. Drain. In a bowl, combine rhubarb, onion & strawberries. In a blender, pulse oil, apple cider vinegar & honey; combine dressing with chopped cilantro & rhubarb mixture. Season to taste with salt & pepper. Set aside until ready to use.