Cook pasta according to the direction. I always cook mine all dente...
In the meanwhile in a medium saucepan melt the butter over medium heat.
Gradually add the cream cheese, half and half and parmesan cheese stirring slowly until blended.
Continue heating the sauce stirring constantly (I use a whisk)just until it reaches boiling point.
Remove from heat and add salt and pepper.
Toss hot pasta into the sauce. Sprinkle parsley on top if desired.
Time to delight with my American variation.