In boiling water add salt and pasta. Cook pasta according to instructions or till it is soft.
Sieve and reserve ½ cup of pasta water for later use. Heat oil in pan and add garlic, saute and cook till raw smell of garlic is gone.
Now add chopped onions, mushrooms, carrots, capsicum broccoli and little salt. Mix and cook veggies for 5 minutes or till they are little soft.
Now reduce the heat to low and sprinkle all purpose flour over the veggies. Saute and cook for about 1-2 minutes.
Add little milk at a time and mix everything. Cook till you get nice thick sauce.
Now add nutmeg powder, cream, oregano and mix everything well. If you think sauce is very thick add some water which we reserved earlier.
Cook pasta in sauce for few more minutes. Garnish it with some chilli flakes. Pasta is ready to serve.