Cook the rice in boiling salted water for about 10 minutes. In the meantime, drain the tomatoes and collect the oil. Cut tomatoes into strips. Clean and chop the oyster mushrooms.
Clean, wash and cut the spring onions into rings. Wash the thyme, dab dry, set aside some for garnishing, chop the rest finely. Wash the meat, dab dry and cut into strips. Cut cheese into cubes.
Drain the rice and let it drain. Heat 2 tablespoons of oil in a pan, fry the meat for 2-3 minutes, turning it over, and remove it. Fry the mushrooms and spring onions in the cooking fat. Add tomatoes and thyme, fry briefly.
Add the tomato paste, sweat briefly, deglaze with 500 ml water. Bring to the boil and add stock. Bind with sauce thickener. Add meat and rice and heat up briefly. Fold in feta cheese, remove pan from heat.
Season to taste with salt and pepper. Garnish with thyme put aside.