Fill a large saucepan with water and bring to a simmer.
Heat up the heavy cream with salt and pepper.
Put in the ravioles and cook for 1 minute 30 secondes.
Remove the ravioles with a slotted spoon and put them in a mixing bowl.
Add the hot cream with salt and pepper and combine.
Transfer to a baking dish and sprinkle with grated Gruyère. Bake in a preheated oven at 350°F for around ten minutes, or under a grill until the Gruyère is melted and lightly browned