Place lentils, salt and 3 cups water in medium saucepot; heat to boiling over medium-high heat. Reduce heat to medium-low and simmer 20 to 25 minutes or until lentils are just tender, stirring occasionally. Strain lentils.
Meanwhile, heat 2 teaspoons oil in medium skillet over medium heat. Add apple; cook 3 to 4 minutes or until golden brown and tender-crisp, stirring frequently.
In large bowl, toss apricots, raisins, lemon juice, oregano, lentils, apple and remaining 2 tablespoons oil until well combined; let stand 5 minutes. Stir in feta, parsley and pistachios. Transfer to serving bowl and drizzle with tahini, if desired. Serve immediately.
Notes
If you have leftovers, transfer them to a storage container and place them in the fridge uncovered for a few hours until they are fully chilled, then cover them with the lid and keep in the refrigerator up to 3 days.
This website provides estimated nutrition information as a courtesy only. You should calculate the nutritional information with the actual ingredients used in your recipe using your preferred nutrition calculator.