Chop the onion finely and stew in the oil with a pinch of salt and 1-2 tablespoons hot water liars. Once is tender, add the cleaned, washed and sliced ​​mushrooms and sauté ten minutes. Put finely chopped tomatoes, rice, paprika and make up 3 cups hot water. Dish add salt and boil on low heat until the rice absorb the liquid. Serve sprinkled with chopped parsley.