1. In a mixing bowl, combine cooked rice, plant-based ground meat, chopped onion, minced garlic, ground cumin, and dried oregano. Mix well and form into small meatballs.
2. Heat olive oil in a large pot over medium heat. Add the meatballs and cook until browned on all sides. Remove meatballs and set aside.
3. In the same pot, add vegetable broth, diced tomatoes, chopped carrots, potatoes, and zucchini. Bring to a boil, then reduce heat and simmer for 15 minutes.
4. Return the meatballs to the pot and simmer for another 10 minutes. Season with salt and pepper to taste.