Pasta & Pizza with oregano

9 tablespoons vegetable oil 2 cups red onions , diced 1 1/2 cups zucchini , diced 1 (14 ounce) can Italian cut green beans, drained 2 stalks celery , chopped[...]

1 spaghetti squash 1 large carrot , sliced on the diagonal 2 stalks celery , sliced on the diagonal 1 large yellow onion , diced 1 red bell pepper , peeled,[...]