Pasta with Summer Squash, Arugula, and Fresh Herbs

12 oz pasta
3 tbsp olive oil
1/2 cup onion (or scallion)
1 tbsp chives
2 summer squash, sliced into 1/2" chunks
2 garlic cloves (or scapes)
1/4 cup basil
1 cup arugula
1/4 cup parsley
salt and pepper
parmesan cheese

In a medium skillet, heat 1 tbsp of olive oil. Add onion and saute for 3 minutes. Add squash and continue to cook for 5 more minutes. Add garlic and cook for 2 minutes. Turn off heat and set aside. Cook pasta. Drain, place in a large shallow serving bowl and toss with the remaining 2 tbsp olive oil, sauteed veggies, arugula, and fresh herbs. Season with salt and pepper. Pass the parmesan cheese, if desired.