Start by preheating your oven to 425℉ (218℃). In a small bowl, mix together the garlic butter and Creole seasoning until well combined; set this mixture aside.
Take each ear of corn and place it on a sheet of foil. Generously brush the corn with the seasoned garlic butter, ensuring it's evenly coated. Wrap each ear of corn individually in the foil, sealing the edges to prevent any leaks. Place the wrapped corn on a baking sheet, arranging them in a single layer.
Slide the baking sheet into the preheated oven and bake the corn for 20-25 minutes. About halfway through the roasting time, turn the tray to ensure even cooking.
Once done, carefully remove the corn from the oven and let it cool slightly before unwrapping. If desired, brush with additional garlic butter mixture before serving. Enjoy the flavorful and tender oven-roasted corn on the cob!