Greek Penne Pasta Salad

Ingredients

• 1 (13.25-ounce) box whole-wheat penne
• 1 cup cooked fava beans or edamame
• 12 black olives, chopped (optional--omitting will reduce sodium)
• 1/2 a red onion, thinly sliced (optional)
• 2 cups cherry or grape tomatoes, quartered
• juice and zest of one lemon
• 1/4 cup balsamic vinegar
• 1/4 cup olive oil
• 1/2 t dried oregano
• handful each fresh basil and parsley, leaves only, chopped
• pinch red pepper flakes
• 4 ounces crumbled reduced-fat feta (about 1 cup)