Bring a large pot of water to boiling. Add the pasta and cook until al dente, about 11-12 minutes. Drain and rinse with cold water.
While pasta is cooking, make the dressing.
In a food processor add the olive oil, parsley, basil, green onions, lemon juice, garlic, and salt. Pulse until the herbs are finely chopped and it resembles a dressing.
In a large bowl, add the cooked pasta, cucumbers, walnuts, and dressing. Toss well to combine.
Add the feta and toss gently to combine.
Serve topped with additional chopped green onions.
Enjoy!