Rinse the lentils under cold water. Place them in a pot with fresh water, bring to a gentle simmer, and cook until tender but still slightly firm—about 20–25 minutes.Drain well and season lightly while still warm.
Preheat the oven to 200°C (400°F). Place bell pepper, mushrooms, and red onion on a tray. Add garlic, rosemary, oregano, olive oil, salt, and pepper. Toss well and spread evenly. Roast for 10 minutes until softened and lightly caramelized.
Use your homemade lemon vinaigrette. Have it ready so you can dress the salad while components are still slightly warm.
In a large bowl, combine the warm lentils with the roasted vegetables. Remove the rosemary sprig and garlic if desired.
Add the lemon vinaigrette and gently toss. Taste and adjust—this is where balance is built.
Add feta, parsley, and mint. Fold everything together carefully to keep the textures intact.