Cook the pasta according to the directions on the box. Reserve 1/2 cup of the pasta water, then drain the noodles.
Add 1 tablespoon extra virgin olive oil to a large pan. Sauté onions for 2 minutes.
Add the asparagus, broccoli and red pepper, cook for 2 minutes.
Add the squash and zucchini, cook for 2 minutes
Add the tomatoes and garlic, cook for 2 minutes.
Add the noodles to the vegetables, then add the reserved pasta water, lemon juice, Italian seasoning, salt, pepper and Parmesan cheese. Stir together. Enjoy!