Add the pasta to boiling water and cook for 8 minutes
While the pasta is cooking, dice the onion add a splash of olive oil to a pan and cook for 2-3 minutes until soft. Remove from pan once cooked and set aside
Tip the contents of the dry sachet into the pan used for the onion, add a splash of milk and mix until it forms a paste, then stir in the remaining milk
Bring to the boil stirring Continuously until sauce begins to thicken, add the grated cheese and allow to melt and remove from hea
Drain the cooked pasta and at the same time drain the sweetcorn and the tuna
Mix the tuna, pasta, sweetcorn, onion and sauce together
Portion up into 4 allow to cool then add a sprinkle of the salmon trimmings to the top of each tub alongside a couple of sprigs of dill per portion, add to fridge, ready for lunch
To Reheat, simply place in the microwave for around 2 minutes until piping hot