Step 1

Place lentils in a medium saucepan. Generously cover lentils with cold water and bring to a simmer over high heat. Reduce heat to medium-low to maintain a steady simmer, and cook until just tender, 20 to 26 minutes. Drain and rinse under cool running water. Transfer the lentils to a large mixing bowl.

Step 2

Add spinach, parsley, cucumber, bell pepper, vinaigrette, feta, salt and pepper and toss to coat. Serve immediately or chill.