Confession: I have a shrine to chef boyardee in my pantry. I also hand roll and stuff my own pasta.
Boil the ravioli gently so it doesn't come apart...
The drain.
Then toss in sauté pan with just what he said. Maybe a tablespoon of butter. 10 seconds. Sprinkle over with some fresh basil and sprinkle with parm regg.
No sauce... The butter just keeps the pasta from sticking to itself.
Dont get me wrong... I LOVE ravioli swimming in sauce, but that's not the way Italians do it / or should be done with GOOD ravioli. I eat both. Hand crafted bursting loveliness.... And el cheepo American style swimming in sauce. I live both, but they are radically different experiences. Like Spam & Holiday glazed ham. Technically the same thing (ham) worlds apart!
HINT: Just cook ONE as a tester. That way you'll know if you want to add tuff to your butter/olive oil (fresh tomatoes, garlic, etc... Or just 'glisten & go'.