Peel and chop the onion. Peel and chop the garlic. Peppers clean, wash and roughly dice. Clean, wash and chop the beans. Mushrooms clean, possibly wash and halve. Leek onions clean, wash and cut into coarse pieces.
Heat oil in a large pan. Fry the onions in it until transparent. Add garlic and the rest of the vegetables and fry while turning. Add rice, dust with cumin and turmeric, deglaze with broth, bring to the boil, cover and allow to swell over medium heat for about 12 minutes. Season to taste with salt and pepper. Serve garnished with oregano as desired