Cook quinoa according to package and let cool completely.
Chop herbs into a super fine chop. ( you can do this by hand, or save time with a food processor) I like to squeeze a little lemon juice on top of the herbs to help keep the mint from browning.
In a small bowl whisk together lemon juice, salt, pepper, olive oil.
In a large bowl combine quinoa, herbs, tomato, and onion, then pour over dressing on top and toss to coat.
Adjust seasonings as desired.
Cover and let this sit in the fridge for at least a few hours for all the flavors to meld.You can also add a can of white beans to make this a hardier dish.
Serve chilled