Cut the onion into small pieces and sauté in a pan with a little oil until translucent. Then add the chopped cherry tomatoes and the finely chopped garlic. Cut the salmon into bite-sized pieces. Chop the leek and add it with the salmon. Finally add the spinach leaves. Depending on your preference, squeeze in the juice from half a lemon to a whole lemon.
When the spinach leaves have collapsed, rinse with cream, crème fraîche and a little white wine. Bring everything to the boil and season with plenty of dill, salt and pepper.
Meanwhile, pre-cook the penne in salted boiling water for five minutes.
Mix the penne with the sauce and place in a baking dish. Sprinkle generously with grated cheese.
Bake at 180 ° C top / bottom heat in a preheated oven for about 20 minutes until the cheese is crispy.