In a large bowl, combine the red onion and balsamic vinegar and let stand while you prepare the other ingredients.
Bring the water to a boil in a large saucepan. Whisk in the Kitchen Accomplice Veggie Broth Concentrate
or Vegan Plant-Based No-Bone Broth Concentrate
, stirring until it dissolves. Add the orzo, reduce the heat to medium, cover partially, and cook until the pasta is al dente. Drain in a colander.
Add the cooked orzo and all the remaining ingredients to the bowl holding the onions, and toss to combine well. Serve at room temperature.