By Haile Thomas
Cook Quinoa according to package instructions. Remove from heat and let stand, covered, for 5 minutes. Fluff with a fork.
Meanwhile, whisk lemon juice and garlic in a small bowl. Gradually whisk in olive oil. Season dressing to taste with seasoning blend and salt.
Spread out quinoa on a large rimmed baking sheet; let cool. Transfer to a large bowl; mix in 1/4 cup dressing.
Add cucumber, tomatoes, herbs, and scallions to bowl with quinoa; toss to coat. Season to taste with salt. Drizzle remaining dressing over.