Boil pasta until al dente.
While the pasta is boiling put the leeks and pepper in to a pan and saute in a bit of oil. When the pasta has 5 minutes left add the kale to the water and at the end add the spinach to wilt.
Drain the pasta, kale and spinach and place in the pasta dish.
Add the pepper and leeks to the dish and mix up well. Next make up the cheese sauce according to the pack, and add 1tsp of English mustard and pour over the pasta and vegetables.
Mix well and cover in grated cheese, and pop in the oven for about 20 minutes until the cheese is bubbling the dish is cooked. Enjoy!
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