Cook rice in boiling salted water according to package instructions. Clean, wash and cut the peppers and courgettes into pieces. Wash, clean and chop the tomatoes. Peel and finely chop onion.
Cut the ham into cubes. Heat oil in a pan. Sauté the bell pepper, zucchini and onion. Add stock and crème légère, bring to the boil and cook for about 5 minutes. Fold in tomatoes and ham.
Season with salt, pepper and marjoram. Drain the rice and let it drain. Put rice and vegetables in a casserole dish. Sprinkle with cheese. Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 5 minutes.
Serve rice and vegetable casserole garnished with marjoram.