Put a skillet, that is big enough to handle everything, on at medium heat. Cover the bottom with good extra virgin olive oil. Chop up the onion(s).
Cook the onions slowly until they start to get translucent then add the tortellini. Cook until the tortellini has softened up to how YOU like it. Turn or flip the whole shebang as the tortellini gets soft. Then add the peas.
Turn or flip everything as the peas defrost. And, that's pretty much all that you want the peas to do is barely warm up so the they have that garden fresh flavor not that mushy school cafeteria flavor. Then add the parmesan cheese, some black pepper and chopped fresh or dried basil leaves. Toss it all couple of more times to get everything coated with some of that good cheesy flavor.
Then serve up your One Skillet Twenty Minute Italian Dinner. Enjoy! You deserve it! We had some of Poppop's easy homemade bread with ours along with some of Gammy's favorite Santa Margarita Pinot Grigio.