Cook pasta according to package directions.

Meanwhile, whisk together milk and flour in medium saucepan until flour is dissolved. Add bay leaf and garlic. Cook over medium heat for eight minutes, stirring often with a wooden spoon, until mixture becomes slightly thickened.

Remove bay leaf and add grated cheese, salt, pepper and nutmeg. Stir until cheese completely melts.

Drain pasta; transfer to large dairy bowl. Toss pasta with butter or oil and chopped parsley. Stir in cheese sauce and toss again.

Spoon pasta into four shallow serving bowls. Sprinkle with Parmesan cheese and garnish with parsley sprigs.