Pasta in white sauce with leeks, mushrooms and capsicums

Weekend breakfast demanded by my 3 yrs old daughter : ) Recipe as follows

For white sauce
Butter - 60 gms
Flour- 50 gms
Hot milk - 600 mls

For pasta
Uncooked pasta- 2 cups
Whey - 1 cup (have saved the whey after removing paneer from milk)
Water - 1 cup
Capsicum (bell peppers) - one red one
Mushrooms - 1/2 cup chopped
Leeks - 7-8 no.s
Garlic - 3-4 cloves
Olive oil - 2-4 tbspn

For seasoning 
Oregano
Pepper
Salt
Chilli flakes
Grated cheese

Method

Heat up the butter in a shallow pan, add the flour whisking thoroughly and then pour in the hot milk little by little whisking continuously so that no lumps are formed.  You white sauce is ready and keep aside

Cook pasta in pressure cooker for one whistle adding whey and water ( Disclaimer : my new method :) )


Heat up the pan, pour in 2-4 tbspn of olive oil. Add in finely chopped leeks and saute till the leeks wilt off, throw in the chopped mushrooms and capsicums, saute for 2-3 minutes and then add in the cooked pasta. Pour in half cup of white sauce and season with oregano, chilli flakes, pepper and salt. Grate in cheese as required and serve hot!