How to Make It
Heat the oil in a small sturdy saucepan. When it is hot, add the onion and cook over moderate heat for 2 minutes, stirring occasionally, until lightly browned. Stir in the rice, then add the stock, salt and red pepper flakes. Bring to a boil, cover and cook over very low heat for 30 minutes.
Meanwhile, peel the broccoli stem to remove the fibrous skin. Cut the stem into 1/2-inch pieces.
When the rice has cooked for 30 minutes, put the broccoli on top (don't stir it in), cover and cook for 10 minutes longer. Stir in the grated cheese and serve immediately.