Cheese omelette with mushrooms

Beat the eggs, stir in the chives and season with salt and pepper. Heat a tablespoon of olive oil in a frying pan and pour in ¼ of the egg mixture. Scatter ¼ of the cheese and ¼ of the mushrooms over the top. Cover the pan and let the eggs set over a moderate heat. Make the other 3 omelettes in the same way. Fold the omelettes and garnish with a sprinkle of chives. Serve with salad and a few slices of bread.