Wash the rice under running water until it runs clear, then cook in salted water according to the instructions on the package, drain and set aside.
Preheat the oven to 170 ° C (fan oven).
Wash and clean the beans - defrost frozen beans - and cut in half. Peel and finely dice the onion. Clean, halve and slice the mushrooms. Quarter the bell pepper, remove the core and peel. Then cut into cubes.
Sear the onions, mushrooms and peppers in the oil. Pour in the broth and add the beans. Then cook the whole thing for about 12 minutes. Fold in the rice and season with the spices to taste, pour into a baking dish, sprinkle with the cheese and a. Baked for 10 minutes.
## I leave everything in the pan to be gratinated. I wrap the handle with aluminum foil for protection.