Transfer quinoa to a medium pot along with your broth. Bring to a boil, then lower heat and simmer, covered with a tight lid. Cook until the quinoa has absorbed all of the liquid, about 15 minutes. Remove the pot from the heat, and let your quinoa cool completely.
Meanwhile, place your red onion, cherry tomatoes, and cucumber in a bowl and add a tiny sprinkle of sea salt.
Now make your dressing:
Place the olive oil, lemon juice, honey, minced garlic, thyme, oregano, sea salt, and black pepper in a jar and shake until all the ingredients are well combined. Alternatively, you can whisk the ingredients together well in a small bowl.
Arrange your chopped lettuce on a larger platter and place the cooled quinoa and your chopped vegetables on top of the lettuce as shown.
Add feta cheese to the top of the salad, you can cut it into cubes or crumble it.