Step 1: In a sauce pan, put your desired amount of pasta onto cook with some water and a pinch of salt. This should take around 10-15 minutes.
Step 2: Meanwhile, chop up the leek and the mushroom into thin slices. Place them in a frying pan with a small amount of olive oil, butter or your chosen frying oil. Stir them often, they should take around 6-8 minutes before they are ready for the next step.
Step 3: When the mushroom and leek has softened and shrunk down a little, crumble up your stock cube finely and sprinkle it over the leek and mushroom. Immediately afterwards, add the cream and stir together. Leave this to simmer for around 3 minutes, stirring occasionally. When both the pasta and the sauce are finished, serve the pasta on a plate then pour the sauce over it. Sprinkle with black pepper if desired.
Step 5: This recipe is great as it can be improvised upon with the addition of chicken, Quorn, bacon or pretty much anything else.