Easy Lentil Salad

Gently stir lentils, celery, carrots, red bell pepper, yellow bell pepper and scallion together in a large bowl; set aside.

Whisk lemon juice, vinegar, mustard, honey, salt and pepper in a small bowl. Gradually whisk in oil until well combined. Gently stir the dressing into the lentil mixture. Serve at room temperature or cover and refrigerate until ready to serve (up to 5 days).