Step 1: Cook the Quinoa : Rinse quinoa under cold water to remove bitterness. In a medium saucepan, bring 2 cups vegetable broth to a boil. Add quinoa, reduce heat to low, cover, and simmer for 15 minutes or until liquid is absorbed. Fluff with a fork and set aside to cool slightly.
Step 2: Roast the Vegetables : Preheat oven to 425°F (220°C). Place zucchini, peppers, onion, carrot, and cherry tomatoes on a large baking sheet. Drizzle with olive oil, sprinkle with salt, pepper, oregano, and paprika, and toss well. Roast for 20–25 minutes, stirring halfway through, until vegetables are tender and slightly caramelized.
Step 3: Prepare the Dressing : In a small bowl or jar, whisk together olive oil, lemon juice, Dijon mustard, garlic, honey, salt, and pepper. Adjust to taste — add more lemon juice for tang or honey for sweetness.
Step 4: Combine Everything :In a large mixing bowl, combine cooked quinoa and roasted vegetables. Pour the dressing over the mixture and toss until well coated. Add feta cheese, herbs, and nuts if using. Serve warm or refrigerate for 30 minutes for a chilled version.