Comforting Cabbage Soup with Ginger

Heat oil in a large pot over medium heat. Add onion and carrots and cook, stirring, until starting to soften, about 3 minutes. Add garlic, ginger, turmeric and crushed red pepper. Cook, stirring, until fragrant, about 1 minute. Add broth, tomatoes and their juices, salt and pepper; bring to a boil. Stir in cabbage and zucchini; return to a boil, then reduce heat to maintain a simmer. Cook, stirring occasionally, until the vegetables are tender, about 10 minutes. Serve sprinkled with parsley, if desired.