1 (12 ounce) package penne pasta
1 yellow squash, chopped
1 zucchini, chopped
1 carrot, julienned
1/2 red bell pepper, julienned
1/2 pint grape tomatoes
1 cup fresh green beans, trimmed and cut into 1 inch pieces
5 spears asparagus, trimmed and cut into 1 inch pieces
1/4 cup olive oil, divided
1/4 teaspoon salt
1/4 teaspoon coarsely ground black pepper
1/2 tablespoon lemon juice
1 tablespoon Italian seasoning
1 tablespoon butter
1/4 large yellow onion, thinly sliced
2 cloves garlic, thinly sliced
2 teaspoons lemon zest
1/3 cup chopped fresh basil leaves
1/3 cup chopped fresh parsley
3 tablespoons balsamic vinegar
1/2 cup grated Romano cheese