Heat 1 tbsp oil and water in a pan.
Boil the pasts and strain it.
Heat butter in a pan.
Add onion and saute for 1 -2 mins.
Add oregano,all purpose flour/maida and black pepper powder and saute for one mins.
Add milk little by little.
Add pasta,cream and mozarella cheese.
Add salt and mix well.
Switch off the gas.