probably doesn't hurt.
Many similar recipes run thus:
Roast a LOT of garlic and squish it. Mix with a cup or two of heavy
cream, bring to boil. Simmer 5 min and add herbs and 1/2 cup grated
Purchasing garlic already roasted at a fancy grocery = cheating, but
that's OK with me. In fact, the fancy grocery probably lets you
purchase penne and maybe even grated cheese in small amounts, too.