Cook the ribbon noodles in plenty of boiling salted water for 12-15 minutes until al dente. Finely dice onions. Fry in 1 tablespoon of oil until translucent. Deglaze with white wine. Add stock and cream, bring to the boil and season. Thicken with sauce thickener. Stir in parmesan. Cut broccoli into florets and blanch in boiling salted water for 5-6 minutes. Drain in a sieve
Cut salmon into 2-3 cm cubes. Season with salt and sprinkle with lemon juice. Heat the rest of the oil in a pan. Fry the salmon cubes all around until golden brown
Drain the pasta, mix with the vegetables, salmon and sauce in the pan and serve