Heat 1 tablespoon butter in a frying pan and cook the spring onions, carrots and tomatoes for 2-3 minutes, stirring; season with salt and pepper and remove from the heat
Whisk the eggs, milk, salt and pepper to taste and stir in the cheese and herbs
Heat the remaining butter in a frying pan; pour in half the egg mixture and cook over a medium heat until just set; place the cooked omelette in a low oven to keep warm; make a second omelette in the same way
Mix together the vegetables, salmon and crème fraiche
Spread the two omelettes with the vegetable mixture, season with salt and pepper and roll up carefully; cut into slices to serve and garnish with parsley
4 servings