Cook the ravioli until al dente and drain.
Pour or spoon hot pasta into a baggie and add butter.
Shake bag until ravioli are well coated with melted butter.
Carefully remove ravioli, one at a time, from the bag & place on a cookie sheet lined with parchment paper. If freezing them, was paper is fine too.
Sprinkle with Parmesan cheese & seeds & salt and pepper.
Cook at 400° F for 10-12 minutes.